165490519 has 2 divisors, whose sum is σ = 165490520. Its totient is φ = 165490518.

The previous prime is 165490511. The next prime is 165490537. The reversal of 165490519 is 915094561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165490519 - 2³ = 165490511 is a prime.

It is a super-2 number, since 2×165490519² = 54774223757778722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165490511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82745259 + 82745260.

It is an arithmetic number, because the mean of its divisors is an integer number (82745260).

Almost surely, 2^165490519 is an apocalyptic number.

165490519 is a deficient number, since it is larger than the sum of its proper divisors (1).

165490519 is an equidigital number, since it uses as much as digits as its factorization.

165490519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 165490519 is about 12864.3118354617. The cubic root of 165490519 is about 549.0236330560.

The spelling of 165490519 in words is "one hundred sixty-five million, four hundred ninety thousand, five hundred nineteen".