1189147256 has 16 divisors (see below), whose sum is σ = 2432346840. Its totient is φ = 540521440.

The previous prime is 1189147249. The next prime is 1189147303. The reversal of 1189147256 is 6527419811.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6756431 + ... + 6756606.

Almost surely, 2^1189147256 is an apocalyptic number.

It is an amenable number.

1189147256 is an abundant number, since it is smaller than the sum of its proper divisors (1243199584).

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

1189147256 is a wasteful number, since it uses less digits than its factorization.

1189147256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13513054 (or 13513050 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 1189147256 is about 34484.0144994750. The cubic root of 1189147256 is about 1059.4453179581.

The spelling of 1189147256 in words is "one billion, one hundred eighty-nine million, one hundred forty-seven thousand, two hundred fifty-six".