18130690 has 16 divisors (see below), whose sum is σ = 32689728. Its totient is φ = 7240176.

The previous prime is 18130681. The next prime is 18130727. The reversal of 18130690 is 9603181.

It is a happy number.

It is a super-2 number, since 2×18130690² = 657443839752200, which contains 22 as substring.

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, 7129 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (2043108).

Almost surely, 2^18130690 is an apocalyptic number.

18130690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18130690 is a deficient number, since it is larger than the sum of its proper divisors (14559038).

18130690 is a wasteful number, since it uses less digits than its factorization.

18130690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 18130690 is about 4258.0147956530. The cubic root of 18130690 is about 262.7068784867.

The spelling of 18130690 in words is "eighteen million, one hundred thirty thousand, six hundred ninety".