158949157 has 2 divisors, whose sum is σ = 158949158. Its totient is φ = 158949156.

The previous prime is 158949071. The next prime is 158949163. The reversal of 158949157 is 751949851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140920641 + 18028516 = 11871^2 + 4246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158949157 is a prime.

It is a super-2 number, since 2×158949157² = 50529669022021298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158949157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158949187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79474578 + 79474579.

It is an arithmetic number, because the mean of its divisors is an integer number (79474579).

Almost surely, 2^158949157 is an apocalyptic number.

It is an amenable number.

158949157 is a deficient number, since it is larger than the sum of its proper divisors (1).

158949157 is an equidigital number, since it uses as much as digits as its factorization.

158949157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 49.

The square root of 158949157 is about 12607.5039956369. The cubic root of 158949157 is about 541.6924006814.

The spelling of 158949157 in words is "one hundred fifty-eight million, nine hundred forty-nine thousand, one hundred fifty-seven".