1651632564 has 48 divisors (see below), whose sum is σ = 3888622080. Its totient is φ = 545589600.

The previous prime is 1651632559. The next prime is 1651632571. The reversal of 1651632564 is 4652361561.

It is a congruent 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, 1019347 + ... + 1020965.

It is an arithmetic number, because the mean of its divisors is an integer number (81012960).

Almost surely, 2^1651632564 is an apocalyptic number.

It is an amenable number.

1651632564 is an abundant number, since it is smaller than the sum of its proper divisors (2236989516).

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

1651632564 is a wasteful number, since it uses less digits than its factorization.

1651632564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 2338 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1651632564 is about 40640.2825285455. The cubic root of 1651632564 is about 1182.0553482575.

The spelling of 1651632564 in words is "one billion, six hundred fifty-one million, six hundred thirty-two thousand, five hundred sixty-four".