163250745849 has 9 divisors (see below), whose sum is σ = 235808383759. Its totient is φ = 108833022480.

The previous prime is 163250745829. The next prime is 163250745857. The reversal of 163250745849 is 948547052361.

It is a happy number.

The square root of 163250745849 is 404043.

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

163250745849 is a `hidden beast` number, since 1 + 6 + 3 + 2 + 50 + 7 + 4 + 584 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2424249 + 163248321600 = 1557^2 + 404040^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 163250745849 - 2⁹ = 163250745337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163250745795 and 163250745804.

It is not an unprimeable number, because it can be changed into a prime (163250745829) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1144789 + ... + 1279469.

It is a 1-persistent number, because it is pandigital, but 2⋅163250745849 = 326501491698 is not.

Almost surely, 2^163250745849 is an apocalyptic number.

163250745849 is the 404043-rd square number.

163250745849 is the 202022-nd centered octagonal number.

It is an amenable number.

163250745849 is a deficient number, since it is larger than the sum of its proper divisors (72557637910).

163250745849 is an frugal number, since it uses more digits than its factorization.

163250745849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269368 (or 134684 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 163250745849 in words is "one hundred sixty-three billion, two hundred fifty million, seven hundred forty-five thousand, eight hundred forty-nine".