157139867 has 2 divisors, whose sum is σ = 157139868. Its totient is φ = 157139866.

The previous prime is 157139831. The next prime is 157139869. The reversal of 157139867 is 768931751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157139867 - 2¹⁰ = 157138843 is a prime.

Together with 157139869, 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 (157139869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78569933 + 78569934.

It is an arithmetic number, because the mean of its divisors is an integer number (78569934).

Almost surely, 2^157139867 is an apocalyptic number.

157139867 is a deficient number, since it is larger than the sum of its proper divisors (1).

157139867 is an equidigital number, since it uses as much as digits as its factorization.

157139867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 47.

The square root of 157139867 is about 12535.5441445515. The cubic root of 157139867 is about 539.6292230688.

The spelling of 157139867 in words is "one hundred fifty-seven million, one hundred thirty-nine thousand, eight hundred sixty-seven".