18285278044 has 24 divisors (see below), whose sum is σ = 34912806768. Its totient is φ = 8310407040.

The previous prime is 18285278029. The next prime is 18285278051. The reversal of 18285278044 is 44087258281.

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, 384862 + ... + 429754.

It is an arithmetic number, because the mean of its divisors is an integer number (1454700282).

Almost surely, 2^18285278044 is an apocalyptic number.

It is an amenable number.

18285278044 is a deficient number, since it is larger than the sum of its proper divisors (16627528724).

18285278044 is a wasteful number, since it uses less digits than its factorization.

18285278044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54165 (or 54163 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 49.

The spelling of 18285278044 in words is "eighteen billion, two hundred eighty-five million, two hundred seventy-eight thousand, forty-four".