165648488 has 8 divisors (see below), whose sum is σ = 310590930. Its totient is φ = 82824240.

The previous prime is 165648449. The next prime is 165648503. The reversal of 165648488 is 884846561.

It can be written as a sum of positive squares in only one way, i.e., 125933284 + 39715204 = 11222^2 + 6302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×165648488² = 54878843153372288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353023 + ... + 10353038.

Almost surely, 2^165648488 is an apocalyptic number.

It is an amenable number.

165648488 is a deficient number, since it is larger than the sum of its proper divisors (144942442).

165648488 is a wasteful number, since it uses less digits than its factorization.

165648488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20706067 (or 20706063 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The square root of 165648488 is about 12870.4501863765. The cubic root of 165648488 is about 549.1982676993.

It can be divided in two parts, 16564 and 8488, that added together give a palindrome (25052).

The spelling of 165648488 in words is "one hundred sixty-five million, six hundred forty-eight thousand, four hundred eighty-eight".