18472907520 has 288 divisors, whose sum is σ = 67157173440. Its totient is φ = 4805591040.

The previous prime is 18472907513. The next prime is 18472907549. The reversal of 18472907520 is 2570927481.

It is a happy number.

18472907520 is a `hidden beast` number, since 1 + 8 + 472 + 90 + 75 + 20 = 666.

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 (45).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1410442 + ... + 1423478.

It is an arithmetic number, because the mean of its divisors is an integer number (233184630).

Almost surely, 2^18472907520 is an apocalyptic number.

18472907520 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 18472907520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33578586720).

18472907520 is an abundant number, since it is smaller than the sum of its proper divisors (48684265920).

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

18472907520 is a wasteful number, since it uses less digits than its factorization.

18472907520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108 (or 13088 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 18472907520 in words is "eighteen billion, four hundred seventy-two million, nine hundred seven thousand, five hundred twenty".