1087130556 has 18 divisors (see below), whose sum is σ = 2748024552. Its totient is φ = 362376840.

The previous prime is 1087130533. The next prime is 1087130557. The reversal of 1087130556 is 6550317801.

1087130556 is a `hidden beast` number, since 1 + 0 + 8 + 71 + 30 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 30198071 = 1087130556 / (1 + 0 + 8 + 7 + 1 + 3 + 0 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1087130556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087130557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15099000 + ... + 15099071.

Almost surely, 2^1087130556 is an apocalyptic number.

It is an amenable number.

1087130556 is an abundant number, since it is smaller than the sum of its proper divisors (1660893996).

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

1087130556 is a wasteful number, since it uses less digits than its factorization.

1087130556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30198081 (or 30198076 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1087130556 is about 32971.6629243962. The cubic root of 1087130556 is about 1028.2385944597.

The spelling of 1087130556 in words is "one billion, eighty-seven million, one hundred thirty thousand, five hundred fifty-six".