18737474607 has 72 divisors (see below), whose sum is σ = 29509773696. Its totient is φ = 11874150288.

The previous prime is 18737474599. The next prime is 18737474627. The reversal of 18737474607 is 70647473781.

It is a happy number.

18737474607 is a `hidden beast` number, since 1 + 87 + 37 + 474 + 60 + 7 = 666.

It is not a de Polignac number, because 18737474607 - 2³ = 18737474599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18737474627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 34254708 + ... + 34255254.

It is an arithmetic number, because the mean of its divisors is an integer number (409857968).

Almost surely, 2^18737474607 is an apocalyptic number.

18737474607 is a deficient number, since it is larger than the sum of its proper divisors (10772299089).

18737474607 is an frugal number, since it uses more digits than its factorization.

18737474607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 54.

The spelling of 18737474607 in words is "eighteen billion, seven hundred thirty-seven million, four hundred seventy-four thousand, six hundred seven".