18144674140 has 24 divisors (see below), whose sum is σ = 38625788880. Its totient is φ = 7158446208.

The previous prime is 18144674137. The next prime is 18144674167. The reversal of 18144674140 is 4147644181.

It is a junction number, because it is equal to n+sod(n) for n = 18144674093 and 18144674102.

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, 6212470 + ... + 6215389.

It is an arithmetic number, because the mean of its divisors is an integer number (1609407870).

Almost surely, 2^18144674140 is an apocalyptic number.

18144674140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18144674140 is an abundant number, since it is smaller than the sum of its proper divisors (20481114740).

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

18144674140 is a wasteful number, since it uses less digits than its factorization.

18144674140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427941 (or 12427939 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 18144674140 in words is "eighteen billion, one hundred forty-four million, six hundred seventy-four thousand, one hundred forty".