18000952452 has 144 divisors (see below), whose sum is σ = 55608239232. Its totient is φ = 4792550400.

The previous prime is 18000952439. The next prime is 18000952493. The reversal of 18000952452 is 25425900081.

18000952452 is a `hidden beast` number, since 1 + 80 + 0 + 0 + 9 + 524 + 52 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 47 ways as a sum of consecutive naturals, for example, 411883 + ... + 453485.

It is an arithmetic number, because the mean of its divisors is an integer number (386168328).

Almost surely, 2^18000952452 is an apocalyptic number.

18000952452 is a gapful number since it is divisible by the number (12) 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 18000952452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27804119616).

18000952452 is an abundant number, since it is smaller than the sum of its proper divisors (37607286780).

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

18000952452 is a wasteful number, since it uses less digits than its factorization.

18000952452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41738 (or 41733 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 18000952452 in words is "eighteen billion, nine hundred fifty-two thousand, four hundred fifty-two".