1178842146 has 16 divisors (see below), whose sum is σ = 2433739008. Its totient is φ = 380271600.

The previous prime is 1178842139. The next prime is 1178842151. The reversal of 1178842146 is 6412488711.

It is a junction number, because it is equal to n+sod(n) for n = 1178842098 and 1178842107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3168745 + ... + 3169116.

It is an arithmetic number, because the mean of its divisors is an integer number (152108688).

Almost surely, 2^1178842146 is an apocalyptic number.

1178842146 is an abundant number, since it is smaller than the sum of its proper divisors (1254896862).

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

1178842146 is a wasteful number, since it uses less digits than its factorization.

1178842146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6337897.

The product of its digits is 86016, while the sum is 42.

The square root of 1178842146 is about 34334.2707218313. The cubic root of 1178842146 is about 1056.3760623276.

The spelling of 1178842146 in words is "one billion, one hundred seventy-eight million, eight hundred forty-two thousand, one hundred forty-six".