1178878320 has 160 divisors (see below), whose sum is σ = 4118307840. Its totient is φ = 309899520.

The previous prime is 1178878193. The next prime is 1178878357. The reversal of 1178878320 is 238788711.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149517 + ... + 157203.

It is an arithmetic number, because the mean of its divisors is an integer number (25739424).

Almost surely, 2^1178878320 is an apocalyptic number.

1178878320 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 1178878320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059153920).

1178878320 is an abundant number, since it is smaller than the sum of its proper divisors (2939429520).

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

1178878320 is a wasteful number, since it uses less digits than its factorization.

1178878320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780 (or 7768 counting only the distinct ones).

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

The square root of 1178878320 is about 34334.7975092325. The cubic root of 1178878320 is about 1056.3868675506.

The spelling of 1178878320 in words is "one billion, one hundred seventy-eight million, eight hundred seventy-eight thousand, three hundred twenty".