165988475 has 24 divisors (see below), whose sum is σ = 212435808. Its totient is φ = 128563200.

The previous prime is 165988469. The next prime is 165988507. The reversal of 165988475 is 574889561.

It is not a de Polignac number, because 165988475 - 2⁸ = 165988219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287387 + ... + 287963.

It is an arithmetic number, because the mean of its divisors is an integer number (8851492).

Almost surely, 2^165988475 is an apocalyptic number.

165988475 is a deficient number, since it is larger than the sum of its proper divisors (46447333).

165988475 is a wasteful number, since it uses less digits than its factorization.

165988475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 930 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 53.

The square root of 165988475 is about 12883.6514622214. The cubic root of 165988475 is about 549.5737468717.

The spelling of 165988475 in words is "one hundred sixty-five million, nine hundred eighty-eight thousand, four hundred seventy-five".