1189129964 has 24 divisors (see below), whose sum is σ = 2292642576. Its totient is φ = 535160000.

The previous prime is 1189129937. The next prime is 1189129973. The reversal of 1189129964 is 4699219811.

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, 129347 + ... + 138234.

It is an arithmetic number, because the mean of its divisors is an integer number (95526774).

Almost surely, 2^1189129964 is an apocalyptic number.

It is an amenable number.

1189129964 is a deficient number, since it is larger than the sum of its proper divisors (1103512612).

1189129964 is a wasteful number, since it uses less digits than its factorization.

1189129964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267697 (or 267695 counting only the distinct ones).

The product of its digits is 279936, while the sum is 50.

The square root of 1189129964 is about 34483.7637736950. The cubic root of 1189129964 is about 1059.4401826207.

The spelling of 1189129964 in words is "one billion, one hundred eighty-nine million, one hundred twenty-nine thousand, nine hundred sixty-four".