18474740406 has 24 divisors (see below), whose sum is σ = 41408902080. Its totient is φ = 5945893296.

The previous prime is 18474740369. The next prime is 18474740423. The reversal of 18474740406 is 60404747481.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17695590 + ... + 17696633.

It is an arithmetic number, because the mean of its divisors is an integer number (1725370920).

Almost surely, 2^18474740406 is an apocalyptic number.

18474740406 is an abundant number, since it is smaller than the sum of its proper divisors (22934161674).

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

18474740406 is a wasteful number, since it uses less digits than its factorization.

18474740406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35392260 (or 35392257 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 18474740406 in words is "eighteen billion, four hundred seventy-four million, seven hundred forty thousand, four hundred six".