1147799918 has 16 divisors (see below), whose sum is σ = 1816128000. Its totient is φ = 542551032.

The previous prime is 1147799909. The next prime is 1147799929. The reversal of 1147799918 is 8199977411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13328 + ... + 49731.

It is an arithmetic number, because the mean of its divisors is an integer number (113508000).

Almost surely, 2^1147799918 is an apocalyptic number.

1147799918 is a deficient number, since it is larger than the sum of its proper divisors (668328082).

1147799918 is a wasteful number, since it uses less digits than its factorization.

1147799918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63559.

The product of its digits is 1143072, while the sum is 56.

The square root of 1147799918 is about 33879.1959467754. The cubic root of 1147799918 is about 1047.0210098663.

The spelling of 1147799918 in words is "one billion, one hundred forty-seven million, seven hundred ninety-nine thousand, nine hundred eighteen".