18275814400 has 132 divisors (see below), whose sum is σ = 46765270720. Its totient is φ = 7074201600.

The previous prime is 18275814367. The next prime is 18275814407. The reversal of 18275814400 is 441857281.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (18275814407) 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, 782086 + ... + 805114.

Almost surely, 2^18275814400 is an apocalyptic number.

18275814400 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 18275814400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23382635360).

18275814400 is an abundant number, since it is smaller than the sum of its proper divisors (28489456320).

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

18275814400 is a wasteful number, since it uses less digits than its factorization.

18275814400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23090 (or 23067 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 18275814400 in words is "eighteen billion, two hundred seventy-five million, eight hundred fourteen thousand, four hundred".