1656145560 has 32 divisors (see below), whose sum is σ = 4968437040. Its totient is φ = 441638784.

The previous prime is 1656145511. The next prime is 1656145573. The reversal of 1656145560 is 655416561.

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, 6900487 + ... + 6900726.

Almost surely, 2^1656145560 is an apocalyptic number.

1656145560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1656145560 is an abundant number, since it is smaller than the sum of its proper divisors (3312291480).

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

1656145560 is a wasteful number, since it uses less digits than its factorization.

1656145560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13801227 (or 13801223 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1656145560 is about 40695.7683303805. The cubic root of 1656145560 is about 1183.1310030758.

The spelling of 1656145560 in words is "one billion, six hundred fifty-six million, one hundred forty-five thousand, five hundred sixty".