18630207252 has 96 divisors (see below), whose sum is σ = 48980400000. Its totient is φ = 6123278592.

The previous prime is 18630207251. The next prime is 18630207257. The reversal of 18630207252 is 25270203681.

18630207252 is a `hidden beast` number, since 18 + 630 + 2 + 0 + 7 + 2 + 5 + 2 = 666.

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 (18630207251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2232624 + ... + 2240952.

It is an arithmetic number, because the mean of its divisors is an integer number (510212500).

Almost surely, 2^18630207252 is an apocalyptic number.

18630207252 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 18630207252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24490200000).

18630207252 is an abundant number, since it is smaller than the sum of its proper divisors (30350192748).

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

18630207252 is a wasteful number, since it uses less digits than its factorization.

18630207252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8630 (or 8622 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 18630207252 in words is "eighteen billion, six hundred thirty million, two hundred seven thousand, two hundred fifty-two".