18494096868 has 144 divisors (see below), whose sum is σ = 52172440320. Its totient is φ = 5487326208.

The previous prime is 18494096857. The next prime is 18494096869. The reversal of 18494096868 is 86869049481.

It is not an unprimeable number, because it can be changed into a prime (18494096869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1583980 + ... + 1595612.

Almost surely, 2^18494096868 is an apocalyptic number.

18494096868 is a gapful number since it is divisible by the number (18) 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 18494096868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26086220160).

18494096868 is an abundant number, since it is smaller than the sum of its proper divisors (33678343452).

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

18494096868 is a wasteful number, since it uses less digits than its factorization.

18494096868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778 (or 11773 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 18494096868 in words is "eighteen billion, four hundred ninety-four million, ninety-six thousand, eight hundred sixty-eight".