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393010161 = 3131003387
BaseRepresentation
bin10111011011001…
…101101111110001
31000101111222120220
4113123031233301
51301102311121
6102555323253
712511350135
oct2733155761
91011458526
10393010161
11191931395
12ab750529
1363564bbb
143a2a53c5
15247826c6
hex176cdbf1

393010161 has 4 divisors (see below), whose sum is σ = 524013552. Its totient is φ = 262006772.

The previous prime is 393010159. The next prime is 393010171. The reversal of 393010161 is 161010393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161010393 = 353670131.

It is a cyclic number.

It is not a de Polignac number, because 393010161 - 21 = 393010159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (393010171) 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 3 ways as a sum of consecutive naturals, for example, 65501691 + ... + 65501696.

It is an arithmetic number, because the mean of its divisors is an integer number (131003388).

Almost surely, 2393010161 is an apocalyptic number.

It is an amenable number.

393010161 is a deficient number, since it is larger than the sum of its proper divisors (131003391).

393010161 is a wasteful number, since it uses less digits than its factorization.

393010161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131003390.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 393010161 is about 19824.4838772665. The cubic root of 393010161 is about 732.4892571819.

The spelling of 393010161 in words is "three hundred ninety-three million, ten thousand, one hundred sixty-one".

Divisors: 1 3 131003387 393010161