18113490 has 64 divisors (see below), whose sum is σ = 49017600. Its totient is φ = 4758912.

The previous prime is 18113467. The next prime is 18113503. The reversal of 18113490 is 9431181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 19251 + ... + 20169.

It is an arithmetic number, because the mean of its divisors is an integer number (765900).

Almost surely, 2^18113490 is an apocalyptic number.

18113490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18113490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24508800).

18113490 is an abundant number, since it is smaller than the sum of its proper divisors (30904110).

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

18113490 is a wasteful number, since it uses less digits than its factorization.

18113490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18113490 is about 4255.9945958612. The cubic root of 18113490 is about 262.6237783595.

The spelling of 18113490 in words is "eighteen million, one hundred thirteen thousand, four hundred ninety".