166137157 has 2 divisors, whose sum is σ = 166137158. Its totient is φ = 166137156.

The previous prime is 166137113. The next prime is 166137187. The reversal of 166137157 is 751731661.

166137157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158986881 + 7150276 = 12609^2 + 2674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166137157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166137187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83068578 + 83068579.

It is an arithmetic number, because the mean of its divisors is an integer number (83068579).

Almost surely, 2^166137157 is an apocalyptic number.

It is an amenable number.

166137157 is a deficient number, since it is larger than the sum of its proper divisors (1).

166137157 is an equidigital number, since it uses as much as digits as its factorization.

166137157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 37.

The square root of 166137157 is about 12889.4203515907. The cubic root of 166137157 is about 549.7377890611.

The spelling of 166137157 in words is "one hundred sixty-six million, one hundred thirty-seven thousand, one hundred fifty-seven".