165495915 has 48 divisors (see below), whose sum is σ = 312923520. Its totient is φ = 80421120.

The previous prime is 165495907. The next prime is 165495917. The reversal of 165495915 is 519594561.

It is a happy number.

165495915 is a `hidden beast` number, since 1 + 6 + 54 + 9 + 591 + 5 = 666.

It is not a de Polignac number, because 165495915 - 2³ = 165495907 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (165495917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44425 + ... + 48005.

It is an arithmetic number, because the mean of its divisors is an integer number (6519240).

Almost surely, 2^165495915 is an apocalyptic number.

165495915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165495915 is a deficient number, since it is larger than the sum of its proper divisors (147427605).

165495915 is a wasteful number, since it uses less digits than its factorization.

165495915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684 (or 3681 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 165495915 is about 12864.5215612552. The cubic root of 165495915 is about 549.0296001638.

The spelling of 165495915 in words is "one hundred sixty-five million, four hundred ninety-five thousand, nine hundred fifteen".