18986752512 has 840 divisors, whose sum is σ = 72026041824. Its totient is φ = 4891041792.

The previous prime is 18986752511. The next prime is 18986752513. The reversal of 18986752512 is 21525768981.

18986752512 is a `hidden beast` number, since 18 + 9 + 8 + 67 + 52 + 512 = 666.

It is an interprime number because it is at equal distance from previous prime (18986752511) and next prime (18986752513).

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

Its product of digits (2419200) is a multiple of the sum of its prime factors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18986752511) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 441552363 + ... + 441552405.

Almost surely, 2^18986752512 is an apocalyptic number.

18986752512 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 18986752512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36013020912).

18986752512 is an abundant number, since it is smaller than the sum of its proper divisors (53039289312).

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

18986752512 is an frugal number, since it uses more digits than its factorization.

18986752512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 68 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The spelling of 18986752512 in words is "eighteen billion, nine hundred eighty-six million, seven hundred fifty-two thousand, five hundred twelve".