156730913 has 2 divisors, whose sum is σ = 156730914. Its totient is φ = 156730912.

The previous prime is 156730909. The next prime is 156730919. The reversal of 156730913 is 319037651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133911184 + 22819729 = 11572^2 + 4777^2 .

It is a cyclic number.

It is not a de Polignac number, because 156730913 - 2² = 156730909 is a prime.

It is not a weakly prime, because it can be changed into another prime (156730919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78365456 + 78365457.

It is an arithmetic number, because the mean of its divisors is an integer number (78365457).

Almost surely, 2^156730913 is an apocalyptic number.

It is an amenable number.

156730913 is a deficient number, since it is larger than the sum of its proper divisors (1).

156730913 is an equidigital number, since it uses as much as digits as its factorization.

156730913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 156730913 is about 12519.2217409869. The cubic root of 156730913 is about 539.1606908994.

The spelling of 156730913 in words is "one hundred fifty-six million, seven hundred thirty thousand, nine hundred thirteen".