165645115 has 16 divisors (see below), whose sum is σ = 206152128. Its totient is φ = 127668096.

The previous prime is 165645107. The next prime is 165645133. The reversal of 165645115 is 511546561.

It is a cyclic number.

It is not a de Polignac number, because 165645115 - 2³ = 165645107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14709 + ... + 23401.

It is an arithmetic number, because the mean of its divisors is an integer number (12884508).

Almost surely, 2^165645115 is an apocalyptic number.

165645115 is a deficient number, since it is larger than the sum of its proper divisors (40507013).

165645115 is a wasteful number, since it uses less digits than its factorization.

165645115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838.

The product of its digits is 18000, while the sum is 34.

The square root of 165645115 is about 12870.3191491120. The cubic root of 165645115 is about 549.1945400099.

The spelling of 165645115 in words is "one hundred sixty-five million, six hundred forty-five thousand, one hundred fifteen".