18750113280 has 640 divisors, whose sum is σ = 71752728960. Its totient is φ = 4682022912.

The previous prime is 18750113269. The next prime is 18750113287. The reversal of 18750113280 is 8231105781.

18750113280 is a `hidden beast` number, since 18 + 7 + 501 + 132 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750113287) 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, 95178142 + ... + 95178338.

It is an arithmetic number, because the mean of its divisors is an integer number (112113639).

Almost surely, 2^18750113280 is an apocalyptic number.

18750113280 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 18750113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35876364480).

18750113280 is an abundant number, since it is smaller than the sum of its proper divisors (53002615680).

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

18750113280 is an frugal number, since it uses more digits than its factorization.

18750113280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 18750113280 in words is "eighteen billion, seven hundred fifty million, one hundred thirteen thousand, two hundred eighty".