1180442646 has 20 divisors (see below), whose sum is σ = 2645066292. Its totient is φ = 393480828.

The previous prime is 1180442629. The next prime is 1180442671. The reversal of 1180442646 is 6462440811.

It is a happy number.

1180442646 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 4 + 4 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1180442646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3643180 + ... + 3643503.

Almost surely, 2^1180442646 is an apocalyptic number.

1180442646 is an abundant number, since it is smaller than the sum of its proper divisors (1464623646).

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

1180442646 is an equidigital number, since it uses as much as digits as its factorization.

1180442646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286697 (or 7286688 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1180442646 is about 34357.5704321478. The cubic root of 1180442646 is about 1056.8539225480.

The spelling of 1180442646 in words is "one billion, one hundred eighty million, four hundred forty-two thousand, six hundred forty-six".