1653155664 has 40 divisors (see below), whose sum is σ = 4329163392. Its totient is φ = 543502080.

The previous prime is 1653155653. The next prime is 1653155677. The reversal of 1653155664 is 4665513561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232392 + ... + 239399.

Almost surely, 2^1653155664 is an apocalyptic number.

It is an amenable number.

1653155664 is an abundant number, since it is smaller than the sum of its proper divisors (2676007728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1653155664 is a wasteful number, since it uses less digits than its factorization.

1653155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471875 (or 471869 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The square root of 1653155664 is about 40659.0170073011. The cubic root of 1653155664 is about 1182.4185919549.

The spelling of 1653155664 in words is "one billion, six hundred fifty-three million, one hundred fifty-five thousand, six hundred sixty-four".