18480994 has 16 divisors (see below), whose sum is σ = 32280768. Its totient is φ = 7770672.

The previous prime is 18480971. The next prime is 18480997. The reversal of 18480994 is 49908481.

It is a self number, because there is not a number n which added to its sum of digits gives 18480994.

It is not an unprimeable number, because it can be changed into a prime (18480997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11712 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (2017548).

Almost surely, 2^18480994 is an apocalyptic number.

18480994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18480994 is a deficient number, since it is larger than the sum of its proper divisors (13799774).

18480994 is a wasteful number, since it uses less digits than its factorization.

18480994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24969.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 18480994 is about 4298.9526631495. The cubic root of 18480994 is about 264.3880217772.

The spelling of 18480994 in words is "eighteen million, four hundred eighty thousand, nine hundred ninety-four".