1556165130 has 64 divisors (see below), whose sum is σ = 4026492288. Its totient is φ = 382636800.

The previous prime is 1556165123. The next prime is 1556165161. The reversal of 1556165130 is 315616551.

It is a junction number, because it is equal to n+sod(n) for n = 1556165091 and 1556165100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505857 + ... + 508923.

It is an arithmetic number, because the mean of its divisors is an integer number (62913942).

Almost surely, 2^1556165130 is an apocalyptic number.

1556165130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1556165130 is an abundant number, since it is smaller than the sum of its proper divisors (2470327158).

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

1556165130 is a wasteful number, since it uses less digits than its factorization.

1556165130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1556165130 is about 39448.2588969399. The cubic root of 1556165130 is about 1158.8268783165.

The spelling of 1556165130 in words is "one billion, five hundred fifty-six million, one hundred sixty-five thousand, one hundred thirty".