1177421868 has 72 divisors (see below), whose sum is σ = 3580478720. Its totient is φ = 318699360.

The previous prime is 1177421857. The next prime is 1177421873. The reversal of 1177421868 is 8681247711.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118168 + ... + 127743.

Almost surely, 2^1177421868 is an apocalyptic number.

1177421868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1177421868 is an abundant number, since it is smaller than the sum of its proper divisors (2403056852).

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

1177421868 is a wasteful number, since it uses less digits than its factorization.

1177421868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245947 (or 245942 counting only the distinct ones).

The product of its digits is 150528, while the sum is 45.

The square root of 1177421868 is about 34313.5813927955. The cubic root of 1177421868 is about 1055.9516485265.

The spelling of 1177421868 in words is "one billion, one hundred seventy-seven million, four hundred twenty-one thousand, eight hundred sixty-eight".