156908813 has 2 divisors, whose sum is σ = 156908814. Its totient is φ = 156908812.

The previous prime is 156908797. The next prime is 156908819. The reversal of 156908813 is 318809651.

156908813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149499529 + 7409284 = 12227^2 + 2722^2 .

It is a cyclic number.

It is not a de Polignac number, because 156908813 - 2⁴ = 156908797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156908819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78454406 + 78454407.

It is an arithmetic number, because the mean of its divisors is an integer number (78454407).

Almost surely, 2^156908813 is an apocalyptic number.

It is an amenable number.

156908813 is a deficient number, since it is larger than the sum of its proper divisors (1).

156908813 is an equidigital number, since it uses as much as digits as its factorization.

156908813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 156908813 is about 12526.3248001958. The cubic root of 156908813 is about 539.3646081683.

The spelling of 156908813 in words is "one hundred fifty-six million, nine hundred eight thousand, eight hundred thirteen".