18473465892 has 72 divisors (see below), whose sum is σ = 50306085984. Its totient is φ = 5260889088.

The previous prime is 18473465861. The next prime is 18473465893. The reversal of 18473465892 is 29856437481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18473465893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129348 + ... + 231684.

Almost surely, 2^18473465892 is an apocalyptic number.

18473465892 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 18473465892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25153042992).

18473465892 is an abundant number, since it is smaller than the sum of its proper divisors (31832620092).

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

18473465892 is a wasteful number, since it uses less digits than its factorization.

18473465892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102665 (or 102656 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 18473465892 in words is "eighteen billion, four hundred seventy-three million, four hundred sixty-five thousand, eight hundred ninety-two".