18870225120 has 288 divisors, whose sum is σ = 65383718400. Its totient is φ = 4955458560.

The previous prime is 18870225103. The next prime is 18870225167. The reversal of 18870225120 is 2152207881.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31502581 + ... + 31503179.

It is an arithmetic number, because the mean of its divisors is an integer number (227026800).

Almost surely, 2^18870225120 is an apocalyptic number.

18870225120 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 18870225120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32691859200).

18870225120 is an abundant number, since it is smaller than the sum of its proper divisors (46513493280).

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

18870225120 is a wasteful number, since it uses less digits than its factorization.

18870225120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 18870225120 in words is "eighteen billion, eight hundred seventy million, two hundred twenty-five thousand, one hundred twenty".