1556164260 has 144 divisors (see below), whose sum is σ = 5428515456. Its totient is φ = 353465856.

The previous prime is 1556164249. The next prime is 1556164369. The reversal of 1556164260 is 624616551.

1556164260 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 1 + 642 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201592 + ... + 209168.

It is an arithmetic number, because the mean of its divisors is an integer number (37698024).

Almost surely, 2^1556164260 is an apocalyptic number.

1556164260 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 1556164260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2714257728).

1556164260 is an abundant number, since it is smaller than the sum of its proper divisors (3872351196).

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

1556164260 is a wasteful number, since it uses less digits than its factorization.

1556164260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7757 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1556164260 is about 39448.2478698357. The cubic root of 1556164260 is about 1158.8266623626.

The spelling of 1556164260 in words is "one billion, five hundred fifty-six million, one hundred sixty-four thousand, two hundred sixty".