18475800 has 192 divisors, whose sum is σ = 67495680. Its totient is φ = 4093440.

The previous prime is 18475781. The next prime is 18475801. The reversal of 18475800 is 857481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222559 + ... + 222641.

It is an arithmetic number, because the mean of its divisors is an integer number (351540).

Almost surely, 2^18475800 is an apocalyptic number.

18475800 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 18475800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33747840).

18475800 is an abundant number, since it is smaller than the sum of its proper divisors (49019880).

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

18475800 is a wasteful number, since it uses less digits than its factorization.

18475800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 18475800 is about 4298.3485200714. The cubic root of 18475800 is about 264.3632511028.

The spelling of 18475800 in words is "eighteen million, four hundred seventy-five thousand, eight hundred".