168150137 has 2 divisors, whose sum is σ = 168150138. Its totient is φ = 168150136.

The previous prime is 168150131. The next prime is 168150181. The reversal of 168150137 is 731051861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163226176 + 4923961 = 12776^2 + 2219^2 .

It is an emirp because it is prime and its reverse (731051861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168150137 - 2⁸ = 168149881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168150131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84075068 + 84075069.

It is an arithmetic number, because the mean of its divisors is an integer number (84075069).

Almost surely, 2^168150137 is an apocalyptic number.

It is an amenable number.

168150137 is a deficient number, since it is larger than the sum of its proper divisors (1).

168150137 is an equidigital number, since it uses as much as digits as its factorization.

168150137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 168150137 is about 12967.2717639448. The cubic root of 168150137 is about 551.9491580020.

The spelling of 168150137 in words is "one hundred sixty-eight million, one hundred fifty thousand, one hundred thirty-seven".