157328929 has 2 divisors, whose sum is σ = 157328930. Its totient is φ = 157328928.

The previous prime is 157328893. The next prime is 157328939. The reversal of 157328929 is 929823751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91718929 + 65610000 = 9577^2 + 8100^2 .

It is an emirp because it is prime and its reverse (929823751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157328929 is a prime.

It is not a weakly prime, because it can be changed into another prime (157328939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78664464 + 78664465.

It is an arithmetic number, because the mean of its divisors is an integer number (78664465).

Almost surely, 2^157328929 is an apocalyptic number.

It is an amenable number.

157328929 is a deficient number, since it is larger than the sum of its proper divisors (1).

157328929 is an equidigital number, since it uses as much as digits as its factorization.

157328929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 157328929 is about 12543.0829144991. The cubic root of 157328929 is about 539.8455536817.

The spelling of 157328929 in words is "one hundred fifty-seven million, three hundred twenty-eight thousand, nine hundred twenty-nine".