153649965 has 32 divisors (see below), whose sum is σ = 287502336. Its totient is φ = 68604480.

The previous prime is 153649921. The next prime is 153649973. The reversal of 153649965 is 569946351.

It is a happy number.

It is not a de Polignac number, because 153649965 - 2⁸ = 153649709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12501 + ... + 21530.

It is an arithmetic number, because the mean of its divisors is an integer number (8984448).

Almost surely, 2^153649965 is an apocalyptic number.

153649965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153649965 is a deficient number, since it is larger than the sum of its proper divisors (133852371).

153649965 is a wasteful number, since it uses less digits than its factorization.

153649965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34089.

The product of its digits is 874800, while the sum is 48.

The square root of 153649965 is about 12395.5623107627. The cubic root of 153649965 is about 535.6044235921.

The spelling of 153649965 in words is "one hundred fifty-three million, six hundred forty-nine thousand, nine hundred sixty-five".