18130490 has 48 divisors (see below), whose sum is σ = 38364192. Its totient is φ = 6150816.

The previous prime is 18130459. The next prime is 18130493. The reversal of 18130490 is 9403181.

It is not an unprimeable number, because it can be changed into a prime (18130493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79757 + ... + 79983.

It is an arithmetic number, because the mean of its divisors is an integer number (799254).

Almost surely, 2^18130490 is an apocalyptic number.

18130490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18130490 is an abundant number, since it is smaller than the sum of its proper divisors (20233702).

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

18130490 is a wasteful number, since it uses less digits than its factorization.

18130490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18130490 is about 4257.9913104655. The cubic root of 18130490 is about 262.7059125082.

The spelling of 18130490 in words is "eighteen million, one hundred thirty thousand, four hundred ninety".