18230994 has 40 divisors (see below), whose sum is σ = 43008240. Its totient is φ = 5756184.

The previous prime is 18230969. The next prime is 18231029. The reversal of 18230994 is 49903281.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117 + ... + 6039.

It is an arithmetic number, because the mean of its divisors is an integer number (1075206).

Almost surely, 2^18230994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18230994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21504120).

18230994 is an abundant number, since it is smaller than the sum of its proper divisors (24777246).

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

18230994 is a wasteful number, since it uses less digits than its factorization.

18230994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956 (or 5947 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 18230994 is about 4269.7768091553. The cubic root of 18230994 is about 263.1904435852.

The spelling of 18230994 in words is "eighteen million, two hundred thirty thousand, nine hundred ninety-four".