1178407880 has 64 divisors (see below), whose sum is σ = 2877336000. Its totient is φ = 431758080.

The previous prime is 1178407877. The next prime is 1178407891. The reversal of 1178407880 is 887048711.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59471 + ... + 76769.

It is an arithmetic number, because the mean of its divisors is an integer number (44958375).

Almost surely, 2^1178407880 is an apocalyptic number.

1178407880 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 1178407880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438668000).

1178407880 is an abundant number, since it is smaller than the sum of its proper divisors (1698928120).

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

1178407880 is a wasteful number, since it uses less digits than its factorization.

1178407880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17454 (or 17450 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 44.

The square root of 1178407880 is about 34327.9460498294. The cubic root of 1178407880 is about 1056.2463292241.

The spelling of 1178407880 in words is "one billion, one hundred seventy-eight million, four hundred seven thousand, eight hundred eighty".