156368129 has 2 divisors, whose sum is σ = 156368130. Its totient is φ = 156368128.

The previous prime is 156368083. The next prime is 156368131. The reversal of 156368129 is 921863651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152275600 + 4092529 = 12340^2 + 2023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156368129 is a prime.

Together with 156368131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156361129) 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, 78184064 + 78184065.

It is an arithmetic number, because the mean of its divisors is an integer number (78184065).

Almost surely, 2^156368129 is an apocalyptic number.

It is an amenable number.

156368129 is a deficient number, since it is larger than the sum of its proper divisors (1).

156368129 is an equidigital number, since it uses as much as digits as its factorization.

156368129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 156368129 is about 12504.7242672520. The cubic root of 156368129 is about 538.7443722978.

The spelling of 156368129 in words is "one hundred fifty-six million, three hundred sixty-eight thousand, one hundred twenty-nine".