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169949238001 = 4122492
BaseRepresentation
bin1001111001000111000…
…0111001001011110001
3121020200001110210202021
42132101300321023301
510241024001104001
6210023521551441
715164333454664
oct2362160711361
9536601423667
10169949238001
1166090a06a04
1228b2b7a5581
1313045592bba
1483230216db
15464a16eba1
hex2791c392f1

169949238001 has 3 divisors (see below), whose sum is σ = 169949650251. Its totient is φ = 169948825752.

The previous prime is 169949237999. The next prime is 169949238029. The reversal of 169949238001 is 100832949961.

The square root of 169949238001 is 412249.

It is a perfect power (a square), and thus also a powerful number.

169949238001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 100832949961 = 263383395247.

It can be written as a sum of positive squares in only one way, i.e., 1521078001 + 168428160000 = 39001^2 + 410400^2 .

It is not a de Polignac number, because 169949238001 - 21 = 169949237999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169949238001.

It is not an unprimeable number, because it can be changed into a prime (169949238101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 206125 + ... + 618373.

It is an arithmetic number, because the mean of its divisors is an integer number (56649883417).

Almost surely, 2169949238001 is an apocalyptic number.

169949238001 is the 412249-th square number.

169949238001 is the 206125-th centered octagonal number.

It is an amenable number.

169949238001 is a deficient number, since it is larger than the sum of its proper divisors (412250).

169949238001 is an frugal number, since it uses more digits than its factorization.

169949238001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824498 (or 412249 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 169949238001 in words is "one hundred sixty-nine billion, nine hundred forty-nine million, two hundred thirty-eight thousand, one".

Divisors: 1 412249 169949238001