1188968556 has 48 divisors (see below), whose sum is σ = 2818222848. Its totient is φ = 390062400.

The previous prime is 1188968549. The next prime is 1188968563. The reversal of 1188968556 is 6558698811.

It is a happy number.

1188968556 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1188968549) and next prime (1188968563).

It is a junction number, because it is equal to n+sod(n) for n = 1188968496 and 1188968505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800991 + ... + 802473.

It is an arithmetic number, because the mean of its divisors is an integer number (58712976).

Almost surely, 2^1188968556 is an apocalyptic number.

It is an amenable number.

1188968556 is an abundant number, since it is smaller than the sum of its proper divisors (1629254292).

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

1188968556 is a wasteful number, since it uses less digits than its factorization.

1188968556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2500 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 57.

The square root of 1188968556 is about 34481.4233464919. The cubic root of 1188968556 is about 1059.3922456517.

The spelling of 1188968556 in words is "one billion, one hundred eighty-eight million, nine hundred sixty-eight thousand, five hundred fifty-six".