18049474748 has 12 divisors (see below), whose sum is σ = 31602396000. Its totient is φ = 9020218752.

The previous prime is 18049474747. The next prime is 18049474777. The reversal of 18049474748 is 84747494081.

It is a junction number, because it is equal to n+sod(n) for n = 18049474693 and 18049474702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18049474747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120661 + ... + 1136652.

It is an arithmetic number, because the mean of its divisors is an integer number (2633533000).

Almost surely, 2^18049474748 is an apocalyptic number.

It is an amenable number.

18049474748 is a deficient number, since it is larger than the sum of its proper divisors (13552921252).

18049474748 is a wasteful number, since it uses less digits than its factorization.

18049474748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259316 (or 2259314 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 18049474748 in words is "eighteen billion, forty-nine million, four hundred seventy-four thousand, seven hundred forty-eight".