18274569144 has 64 divisors (see below), whose sum is σ = 49233828000. Its totient is φ = 5619165696.

The previous prime is 18274569143. The next prime is 18274569221. The reversal of 18274569144 is 44196547281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18274569143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464382 + ... + 502194.

Almost surely, 2^18274569144 is an apocalyptic number.

It is an amenable number.

18274569144 is an abundant number, since it is smaller than the sum of its proper divisors (30959258856).

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

18274569144 is a wasteful number, since it uses less digits than its factorization.

18274569144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39384 (or 39380 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 18274569144 in words is "eighteen billion, two hundred seventy-four million, five hundred sixty-nine thousand, one hundred forty-four".