1178311680 has 528 divisors, whose sum is σ = 5042890944. Its totient is φ = 247726080.

The previous prime is 1178311679. The next prime is 1178311697. The reversal of 1178311680 is 861138711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4193140 + ... + 4193420.

Almost surely, 2^1178311680 is an apocalyptic number.

1178311680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1178311680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2521445472).

1178311680 is an abundant number, since it is smaller than the sum of its proper divisors (3864579264).

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

1178311680 is a wasteful number, since it uses less digits than its factorization.

1178311680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1178311680 is about 34326.5448304952. The cubic root of 1178311680 is about 1056.2175860179.

The spelling of 1178311680 in words is "one billion, one hundred seventy-eight million, three hundred eleven thousand, six hundred eighty".