1580516628 has 12 divisors (see below), whose sum is σ = 3687872160. Its totient is φ = 526838872.

The previous prime is 1580516573. The next prime is 1580516633. The reversal of 1580516628 is 8266150851.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1580516628² = 4996065622768980768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1580516628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65854848 + ... + 65854871.

It is an arithmetic number, because the mean of its divisors is an integer number (307322680).

Almost surely, 2^1580516628 is an apocalyptic number.

It is an amenable number.

1580516628 is an abundant number, since it is smaller than the sum of its proper divisors (2107355532).

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

1580516628 is a wasteful number, since it uses less digits than its factorization.

1580516628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131709726 (or 131709724 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 1580516628 is about 39755.7118915006. The cubic root of 1580516628 is about 1164.8402165630.

The spelling of 1580516628 in words is "one billion, five hundred eighty million, five hundred sixteen thousand, six hundred twenty-eight".