18413800 has 48 divisors (see below), whose sum is σ = 44684640. Its totient is φ = 7043520.

The previous prime is 18413789. The next prime is 18413803. The reversal of 18413800 is 831481.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (18413803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2599 + ... + 6601.

It is an arithmetic number, because the mean of its divisors is an integer number (930930).

Almost surely, 2^18413800 is an apocalyptic number.

18413800 is a gapful number since it is divisible by the number (10) 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 18413800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22342320).

18413800 is an abundant number, since it is smaller than the sum of its proper divisors (26270840).

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

18413800 is a wasteful number, since it uses less digits than its factorization.

18413800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042 (or 4033 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18413800 is about 4291.1303872057. The cubic root of 18413800 is about 264.0672081721.

The spelling of 18413800 in words is "eighteen million, four hundred thirteen thousand, eight hundred".