1556398088 has 16 divisors (see below), whose sum is σ = 3335138880. Its totient is φ = 667027728.

The previous prime is 1556398073. The next prime is 1556398097. The reversal of 1556398088 is 8808936551.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 13896356 + ... + 13896467.

It is an arithmetic number, because the mean of its divisors is an integer number (208446180).

Almost surely, 2^1556398088 is an apocalyptic number.

It is an amenable number.

1556398088 is an abundant number, since it is smaller than the sum of its proper divisors (1778740792).

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

1556398088 is a wasteful number, since it uses less digits than its factorization.

1556398088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27792836 (or 27792832 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The square root of 1556398088 is about 39451.2114896362. The cubic root of 1556398088 is about 1158.8847009123.

The spelling of 1556398088 in words is "one billion, five hundred fifty-six million, three hundred ninety-eight thousand, eighty-eight".