157931927 has 2 divisors, whose sum is σ = 157931928. Its totient is φ = 157931926.

The previous prime is 157931881. The next prime is 157931929. The reversal of 157931927 is 729139751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157931927 - 2⁶ = 157931863 is a prime.

Together with 157931929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157931929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78965963 + 78965964.

It is an arithmetic number, because the mean of its divisors is an integer number (78965964).

Almost surely, 2^157931927 is an apocalyptic number.

157931927 is a deficient number, since it is larger than the sum of its proper divisors (1).

157931927 is an equidigital number, since it uses as much as digits as its factorization.

157931927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 44.

The square root of 157931927 is about 12567.0969997052. The cubic root of 157931927 is about 540.5343670090.

The spelling of 157931927 in words is "one hundred fifty-seven million, nine hundred thirty-one thousand, nine hundred twenty-seven".