18169930 has 16 divisors (see below), whose sum is σ = 32757120. Its totient is φ = 7256592.

The previous prime is 18169927. The next prime is 18169967. The reversal of 18169930 is 3996181.

It is a self number, because there is not a number n which added to its sum of digits gives 18169930.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8731 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (2047320).

Almost surely, 2^18169930 is an apocalyptic number.

18169930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18169930 is a deficient number, since it is larger than the sum of its proper divisors (14587190).

18169930 is a wasteful number, since it uses less digits than its factorization.

18169930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 18169930 is about 4262.6200862850. The cubic root of 18169930 is about 262.8962662027.

The spelling of 18169930 in words is "eighteen million, one hundred sixty-nine thousand, nine hundred thirty".