1556164460 has 12 divisors (see below), whose sum is σ = 3267945408. Its totient is φ = 622465776.

The previous prime is 1556164417. The next prime is 1556164499. The reversal of 1556164460 is 644616551.

It is a happy 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, 38904092 + ... + 38904131.

It is an arithmetic number, because the mean of its divisors is an integer number (272328784).

Almost surely, 2^1556164460 is an apocalyptic number.

1556164460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1556164460 is an abundant number, since it is smaller than the sum of its proper divisors (1711780948).

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

1556164460 is a wasteful number, since it uses less digits than its factorization.

1556164460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77808232 (or 77808230 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1556164460 is about 39448.2504048025. The cubic root of 1556164460 is about 1158.8267120072.

The spelling of 1556164460 in words is "one billion, five hundred fifty-six million, one hundred sixty-four thousand, four hundred sixty".