18992867712 has 512 divisors, whose sum is σ = 65144217600. Its totient is φ = 4768727040.

The previous prime is 18992867693. The next prime is 18992867791. The reversal of 18992867712 is 21776829981.

It is a super-2 number, since 2×18992867712² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96410398 + ... + 96410594.

It is an arithmetic number, because the mean of its divisors is an integer number (127234800).

Almost surely, 2^18992867712 is an apocalyptic number.

18992867712 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 18992867712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32572108800).

18992867712 is an abundant number, since it is smaller than the sum of its proper divisors (46151349888).

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

18992867712 is a wasteful number, since it uses less digits than its factorization.

18992867712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 342 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 60.

The spelling of 18992867712 in words is "eighteen billion, nine hundred ninety-two million, eight hundred sixty-seven thousand, seven hundred twelve".