1118637994 has 8 divisors (see below), whose sum is σ = 1706397120. Its totient is φ = 549838956.

The previous prime is 1118637979. The next prime is 1118638019. The reversal of 1118637994 is 4997368111.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4739874 + ... + 4740109.

It is an arithmetic number, because the mean of its divisors is an integer number (213299640).

Almost surely, 2^1118637994 is an apocalyptic number.

1118637994 is a deficient number, since it is larger than the sum of its proper divisors (587759126).

1118637994 is an equidigital number, since it uses as much as digits as its factorization.

1118637994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9480044.

The product of its digits is 326592, while the sum is 49.

The square root of 1118637994 is about 33446.0460144394. The cubic root of 1118637994 is about 1038.0776848439.

The spelling of 1118637994 in words is "one billion, one hundred eighteen million, six hundred thirty-seven thousand, nine hundred ninety-four".