165715379 has 2 divisors, whose sum is σ = 165715380. Its totient is φ = 165715378.

The previous prime is 165715357. The next prime is 165715387. The reversal of 165715379 is 973517561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165715379 is a prime.

It is a super-2 number, since 2×165715379² = 54923173674227282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165715339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82857689 + 82857690.

It is an arithmetic number, because the mean of its divisors is an integer number (82857690).

Almost surely, 2^165715379 is an apocalyptic number.

165715379 is a deficient number, since it is larger than the sum of its proper divisors (1).

165715379 is an equidigital number, since it uses as much as digits as its factorization.

165715379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198450, while the sum is 44.

The square root of 165715379 is about 12873.0485511397. The cubic root of 165715379 is about 549.2721822034.

The spelling of 165715379 in words is "one hundred sixty-five million, seven hundred fifteen thousand, three hundred seventy-nine".