158713657 has 2 divisors, whose sum is σ = 158713658. Its totient is φ = 158713656.

The previous prime is 158713637. The next prime is 158713661. The reversal of 158713657 is 756317851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 11431161 = 12136^2 + 3381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158713657 is a prime.

It is not a weakly prime, because it can be changed into another prime (158713637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79356828 + 79356829.

It is an arithmetic number, because the mean of its divisors is an integer number (79356829).

Almost surely, 2^158713657 is an apocalyptic number.

It is an amenable number.

158713657 is a deficient number, since it is larger than the sum of its proper divisors (1).

158713657 is an equidigital number, since it uses as much as digits as its factorization.

158713657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 158713657 is about 12598.1608578395. The cubic root of 158713657 is about 541.4247435748.

The spelling of 158713657 in words is "one hundred fifty-eight million, seven hundred thirteen thousand, six hundred fifty-seven".