1178938816 has 42 divisors (see below), whose sum is σ = 2571485840. Its totient is φ = 535877760.

The previous prime is 1178938781. The next prime is 1178938861. The reversal of 1178938816 is 6188398711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68376 + ... + 83863.

Almost surely, 2^1178938816 is an apocalyptic number.

1178938816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1178938816 is an abundant number, since it is smaller than the sum of its proper divisors (1392547024).

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

1178938816 is a wasteful number, since it uses less digits than its factorization.

1178938816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152273 (or 152252 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The square root of 1178938816 is about 34335.6784700696. The cubic root of 1178938816 is about 1056.4049372941.

It can be divided in two parts, 11789 and 38816, that added together give a palindrome (50605).

The spelling of 1178938816 in words is "one billion, one hundred seventy-eight million, nine hundred thirty-eight thousand, eight hundred sixteen".