1189473656 has 32 divisors (see below), whose sum is σ = 2556612480. Its totient is φ = 508226400.

The previous prime is 1189473631. The next prime is 1189473671. The reversal of 1189473656 is 6563749811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13550 + ... + 50621.

It is an arithmetic number, because the mean of its divisors is an integer number (79894140).

Almost surely, 2^1189473656 is an apocalyptic number.

It is an amenable number.

1189473656 is an abundant number, since it is smaller than the sum of its proper divisors (1367138824).

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

1189473656 is a wasteful number, since it uses less digits than its factorization.

1189473656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64515 (or 64511 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 1189473656 is about 34488.7468023992. The cubic root of 1189473656 is about 1059.5422421240.

The spelling of 1189473656 in words is "one billion, one hundred eighty-nine million, four hundred seventy-three thousand, six hundred fifty-six".