165136379 has 2 divisors, whose sum is σ = 165136380. Its totient is φ = 165136378.

The previous prime is 165136327. The next prime is 165136399. The reversal of 165136379 is 973631561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165136379 - 2⁸ = 165136123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165136319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82568189 + 82568190.

It is an arithmetic number, because the mean of its divisors is an integer number (82568190).

Almost surely, 2^165136379 is an apocalyptic number.

165136379 is a deficient number, since it is larger than the sum of its proper divisors (1).

165136379 is an equidigital number, since it uses as much as digits as its factorization.

165136379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 165136379 is about 12850.5400275630. The cubic root of 165136379 is about 548.6317272514.

The spelling of 165136379 in words is "one hundred sixty-five million, one hundred thirty-six thousand, three hundred seventy-nine".