1183820918464 has 28 divisors (see below), whose sum is σ = 2349545779944. Its totient is φ = 591809383424.

The previous prime is 1183820918393. The next prime is 1183820918471. The reversal of 1183820918464 is 4648190283811.

It is a super-2 number, since 2×1183820918464² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200889 + ... + 1951864.

Almost surely, 2^{1183820918464} is an apocalyptic number.

It is an amenable number.

1183820918464 is a deficient number, since it is larger than the sum of its proper divisors (1165724861480).

1183820918464 is an equidigital number, since it uses as much as digits as its factorization.

1183820918464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158632 (or 3158622 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 1183820918464 in words is "one trillion, one hundred eighty-three billion, eight hundred twenty million, nine hundred eighteen thousand, four hundred sixty-four".