18234374400 has 864 divisors, whose sum is σ = 74728967040. Its totient is φ = 4313088000.

The previous prime is 18234374393. The next prime is 18234374413. The reversal of 18234374400 is 447343281.

18234374400 is a `hidden beast` number, since 18 + 234 + 3 + 7 + 4 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 100742310 + ... + 100742490.

It is an arithmetic number, because the mean of its divisors is an integer number (86491860).

Almost surely, 2^18234374400 is an apocalyptic number.

18234374400 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 18234374400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37364483520).

18234374400 is an abundant number, since it is smaller than the sum of its proper divisors (56494592640).

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

18234374400 is a wasteful number, since it uses less digits than its factorization.

18234374400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 18234374400 in words is "eighteen billion, two hundred thirty-four million, three hundred seventy-four thousand, four hundred".