18371612160 has 640 divisors, whose sum is σ = 72383224320. Its totient is φ = 4379443200.

The previous prime is 18371612159. The next prime is 18371612167. The reversal of 18371612160 is 6121617381.

18371612160 is a `hidden beast` number, since 1 + 8 + 37 + 1 + 612 + 1 + 6 + 0 = 666.

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

It is a super-2 number, since 2×18371612160² (a number of 21 digits) contains 22 as substring.

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 (18371612167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55503195 + ... + 55503525.

It is an arithmetic number, because the mean of its divisors is an integer number (113098788).

Almost surely, 2^18371612160 is an apocalyptic number.

18371612160 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 18371612160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36191612160).

18371612160 is an abundant number, since it is smaller than the sum of its proper divisors (54011612160).

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

18371612160 is a wasteful number, since it uses less digits than its factorization.

18371612160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 18371612160 in words is "eighteen billion, three hundred seventy-one million, six hundred twelve thousand, one hundred sixty".