1178456920 has 16 divisors (see below), whose sum is σ = 2651528160. Its totient is φ = 471382752.

The previous prime is 1178456857. The next prime is 1178456927. The reversal of 1178456920 is 296548711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178456927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14730672 + ... + 14730751.

It is an arithmetic number, because the mean of its divisors is an integer number (165720510).

Almost surely, 2^1178456920 is an apocalyptic number.

1178456920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178456920 is an abundant number, since it is smaller than the sum of its proper divisors (1473071240).

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

1178456920 is a wasteful number, since it uses less digits than its factorization.

1178456920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29461434 (or 29461430 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1178456920 is about 34328.6603292351. The cubic root of 1178456920 is about 1056.2609810840.

The spelling of 1178456920 in words is "one billion, one hundred seventy-eight million, four hundred fifty-six thousand, nine hundred twenty".