156928061 has 2 divisors, whose sum is σ = 156928062. Its totient is φ = 156928060.

The previous prime is 156928021. The next prime is 156928067. The reversal of 156928061 is 160829651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120868036 + 36060025 = 10994^2 + 6005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156928061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156928067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78464030 + 78464031.

It is an arithmetic number, because the mean of its divisors is an integer number (78464031).

Almost surely, 2^156928061 is an apocalyptic number.

It is an amenable number.

156928061 is a deficient number, since it is larger than the sum of its proper divisors (1).

156928061 is an equidigital number, since it uses as much as digits as its factorization.

156928061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 156928061 is about 12527.0930786037. The cubic root of 156928061 is about 539.3866618807.

The spelling of 156928061 in words is "one hundred fifty-six million, nine hundred twenty-eight thousand, sixty-one".