165351139 has 2 divisors, whose sum is σ = 165351140. Its totient is φ = 165351138.

The previous prime is 165351107. The next prime is 165351161. The reversal of 165351139 is 931153561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165351139 - 2⁵ = 165351107 is a prime.

It is not a weakly prime, because it can be changed into another prime (165351239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82675569 + 82675570.

It is an arithmetic number, because the mean of its divisors is an integer number (82675570).

Almost surely, 2^165351139 is an apocalyptic number.

165351139 is a deficient number, since it is larger than the sum of its proper divisors (1).

165351139 is an equidigital number, since it uses as much as digits as its factorization.

165351139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 34.

The square root of 165351139 is about 12858.8933816250. The cubic root of 165351139 is about 548.8694562334.

The spelling of 165351139 in words is "one hundred sixty-five million, three hundred fifty-one thousand, one hundred thirty-nine".