18453386952 has 896 divisors, whose sum is σ = 72715104000. Its totient is φ = 4232632320.

The previous prime is 18453386911. The next prime is 18453386971. The reversal of 18453386952 is 25968335481.

18453386952 is a `hidden beast` number, since 18 + 4 + 533 + 8 + 6 + 95 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 169297074 + ... + 169297182.

It is an arithmetic number, because the mean of its divisors is an integer number (81155250).

Almost surely, 2^18453386952 is an apocalyptic number.

18453386952 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 18453386952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36357552000).

18453386952 is an abundant number, since it is smaller than the sum of its proper divisors (54261717048).

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

18453386952 is a wasteful number, since it uses less digits than its factorization.

18453386952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 174 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 18453386952 in words is "eighteen billion, four hundred fifty-three million, three hundred eighty-six thousand, nine hundred fifty-two".