18045958 has 8 divisors (see below), whose sum is σ = 30935952. Its totient is φ = 7733976.

The previous prime is 18045949. The next prime is 18045971. The reversal of 18045958 is 85954081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18045958.

It is a congruent number.

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, 644485 + ... + 644512.

It is an arithmetic number, because the mean of its divisors is an integer number (3866994).

Almost surely, 2^18045958 is an apocalyptic number.

18045958 is a deficient number, since it is larger than the sum of its proper divisors (12889994).

18045958 is a wasteful number, since it uses less digits than its factorization.

18045958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289006.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 18045958 is about 4248.0534365754. The cubic root of 18045958 is about 262.2969943678.

The spelling of 18045958 in words is "eighteen million, forty-five thousand, nine hundred fifty-eight".