165028819 has 2 divisors, whose sum is σ = 165028820. Its totient is φ = 165028818.

The previous prime is 165028811. The next prime is 165028907. The reversal of 165028819 is 918820561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165028819 - 2³ = 165028811 is a prime.

It is a super-2 number, since 2×165028819² = 54469022201069522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165028811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82514409 + 82514410.

It is an arithmetic number, because the mean of its divisors is an integer number (82514410).

Almost surely, 2^165028819 is an apocalyptic number.

165028819 is a deficient number, since it is larger than the sum of its proper divisors (1).

165028819 is an equidigital number, since it uses as much as digits as its factorization.

165028819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 165028819 is about 12846.3543077404. The cubic root of 165028819 is about 548.5125860389.

The spelling of 165028819 in words is "one hundred sixty-five million, twenty-eight thousand, eight hundred nineteen".