18113004 has 192 divisors, whose sum is σ = 61465600. Its totient is φ = 4478976.

The previous prime is 18112999. The next prime is 18113009. The reversal of 18113004 is 40031181.

It is an interprime number because it is at equal distance from previous prime (18112999) and next prime (18113009).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (18113009) 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 63 ways as a sum of consecutive naturals, for example, 186684 + ... + 186780.

Almost surely, 2^18113004 is an apocalyptic number.

18113004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18113004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30732800).

18113004 is an abundant number, since it is smaller than the sum of its proper divisors (43352596).

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

18113004 is a wasteful number, since it uses less digits than its factorization.

18113004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 18113004 is about 4255.9374995411. The cubic root of 18113004 is about 262.6214295337.

Adding to 18113004 its reverse (40031181), we get a palindrome (58144185).

The spelling of 18113004 in words is "eighteen million, one hundred thirteen thousand, four".