1178776872 has 384 divisors, whose sum is σ = 4387219200. Its totient is φ = 276701184.

The previous prime is 1178776867. The next prime is 1178776877. The reversal of 1178776872 is 2786778711.

It is an interprime number because it is at equal distance from previous prime (1178776867) and next prime (1178776877).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1178776877) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2116018 + ... + 2116574.

It is an arithmetic number, because the mean of its divisors is an integer number (11425050).

Almost surely, 2^1178776872 is an apocalyptic number.

1178776872 is a gapful number since it is divisible by the number (12) 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 1178776872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193609600).

1178776872 is an abundant number, since it is smaller than the sum of its proper divisors (3208442328).

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

1178776872 is a wasteful number, since it uses less digits than its factorization.

1178776872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 618 counting only the distinct ones).

The product of its digits is 1843968, while the sum is 54.

The square root of 1178776872 is about 34333.3201423923. The cubic root of 1178776872 is about 1056.3565643357.

The spelling of 1178776872 in words is "one billion, one hundred seventy-eight million, seven hundred seventy-six thousand, eight hundred seventy-two".