165506119 has 2 divisors, whose sum is σ = 165506120. Its totient is φ = 165506118.

The previous prime is 165506113. The next prime is 165506141. The reversal of 165506119 is 911605561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165506119 - 2⁵ = 165506087 is a prime.

It is a super-2 number, since 2×165506119² = 54784550852884322, which contains 22 as substring.

It is equal to p_9265660 and since 165506119 and 9265660 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165506113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82753059 + 82753060.

It is an arithmetic number, because the mean of its divisors is an integer number (82753060).

Almost surely, 2^165506119 is an apocalyptic number.

165506119 is a deficient number, since it is larger than the sum of its proper divisors (1).

165506119 is an equidigital number, since it uses as much as digits as its factorization.

165506119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 165506119 is about 12864.9181497591. The cubic root of 165506119 is about 549.0408837916.

The spelling of 165506119 in words is "one hundred sixty-five million, five hundred six thousand, one hundred nineteen".