1556114120 has 64 divisors (see below), whose sum is σ = 3829334400. Its totient is φ = 564410880.

The previous prime is 1556114111. The next prime is 1556114141. The reversal of 1556114120 is 214116551.

It is a self number, because there is not a number n which added to its sum of digits gives 1556114120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175637 + ... + 184283.

It is an arithmetic number, because the mean of its divisors is an integer number (59833350).

Almost surely, 2^1556114120 is an apocalyptic number.

1556114120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1556114120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914667200).

1556114120 is an abundant number, since it is smaller than the sum of its proper divisors (2273220280).

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

1556114120 is a wasteful number, since it uses less digits than its factorization.

1556114120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078 (or 9074 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1556114120 is about 39447.6123485313. The cubic root of 1556114120 is about 1158.8142163344.

The spelling of 1556114120 in words is "one billion, five hundred fifty-six million, one hundred fourteen thousand, one hundred twenty".