18474444373 has 12 divisors (see below), whose sum is σ = 23444379072. Its totient is φ = 14395670520.

The previous prime is 18474444371. The next prime is 18474444379. The reversal of 18474444373 is 37344447481.

It is not a de Polignac number, because 18474444373 - 2¹ = 18474444371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18474444371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17137165 + ... + 17138242.

It is an arithmetic number, because the mean of its divisors is an integer number (1953698256).

Almost surely, 2^18474444373 is an apocalyptic number.

It is an amenable number.

18474444373 is a deficient number, since it is larger than the sum of its proper divisors (4969934699).

18474444373 is a wasteful number, since it uses less digits than its factorization.

18474444373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34275432 (or 34275425 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 49.

The spelling of 18474444373 in words is "eighteen billion, four hundred seventy-four million, four hundred forty-four thousand, three hundred seventy-three".