18862611912 has 320 divisors, whose sum is σ = 58279795200. Its totient is φ = 5677102080.

The previous prime is 18862611863. The next prime is 18862611913. The reversal of 18862611912 is 21911626881.

It is a happy number.

18862611912 is a `hidden beast` number, since 1 + 8 + 8 + 626 + 1 + 1 + 9 + 12 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18862611913) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27861718 + ... + 27862394.

It is an arithmetic number, because the mean of its divisors is an integer number (182124360).

Almost surely, 2^18862611912 is an apocalyptic number.

18862611912 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 18862611912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29139897600).

18862611912 is an abundant number, since it is smaller than the sum of its proper divisors (39417183288).

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

18862611912 is a wasteful number, since it uses less digits than its factorization.

18862611912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 805 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The spelling of 18862611912 in words is "eighteen billion, eight hundred sixty-two million, six hundred eleven thousand, nine hundred twelve".