1118681766 has 20 divisors (see below), whose sum is σ = 2506676172. Its totient is φ = 372893868.

The previous prime is 1118681749. The next prime is 1118681777. The reversal of 1118681766 is 6671868111.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3452560 + ... + 3452883.

Almost surely, 2^1118681766 is an apocalyptic number.

1118681766 is an abundant number, since it is smaller than the sum of its proper divisors (1387994406).

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

1118681766 is an equidigital number, since it uses as much as digits as its factorization.

1118681766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905457 (or 6905448 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 1118681766 is about 33446.7003753734. The cubic root of 1118681766 is about 1038.0912245663.

The spelling of 1118681766 in words is "one billion, one hundred eighteen million, six hundred eighty-one thousand, seven hundred sixty-six".