18423845814 has 16 divisors (see below), whose sum is σ = 40197481920. Its totient is φ = 5582983560.

The previous prime is 18423845809. The next prime is 18423845821. The reversal of 18423845814 is 41854832481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139574524 + ... + 139574655.

It is an arithmetic number, because the mean of its divisors is an integer number (2512342620).

Almost surely, 2^18423845814 is an apocalyptic number.

18423845814 is an abundant number, since it is smaller than the sum of its proper divisors (21773636106).

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

18423845814 is a wasteful number, since it uses less digits than its factorization.

18423845814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279149195.

The product of its digits is 983040, while the sum is 48.

The spelling of 18423845814 in words is "eighteen billion, four hundred twenty-three million, eight hundred forty-five thousand, eight hundred fourteen".