1178395560 has 256 divisors, whose sum is σ = 4128307200. Its totient is φ = 298598400.

The previous prime is 1178395513. The next prime is 1178395597. The reversal of 1178395560 is 655938711.

It is a happy number.

1178395560 is a `hidden beast` number, since 1 + 1 + 7 + 83 + 9 + 5 + 560 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2041992 + ... + 2042568.

It is an arithmetic number, because the mean of its divisors is an integer number (16126200).

Almost surely, 2^1178395560 is an apocalyptic number.

1178395560 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 1178395560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064153600).

1178395560 is an abundant number, since it is smaller than the sum of its proper divisors (2949911640).

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

1178395560 is a wasteful number, since it uses less digits than its factorization.

1178395560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 1178395560 is about 34327.7666037277. The cubic root of 1178395560 is about 1056.2426482688.

The spelling of 1178395560 in words is "one billion, one hundred seventy-eight million, three hundred ninety-five thousand, five hundred sixty".