18736393742 has 32 divisors (see below), whose sum is σ = 31183820640. Its totient is φ = 8372024320.

The previous prime is 18736393723. The next prime is 18736393759. The reversal of 18736393742 is 24739363781.

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 15 ways as a sum of consecutive naturals, for example, 311078 + ... + 366390.

It is an arithmetic number, because the mean of its divisors is an integer number (974494395).

Almost surely, 2^18736393742 is an apocalyptic number.

18736393742 is a deficient number, since it is larger than the sum of its proper divisors (12447426898).

18736393742 is a wasteful number, since it uses less digits than its factorization.

18736393742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55588.

The product of its digits is 4572288, while the sum is 53.

The spelling of 18736393742 in words is "eighteen billion, seven hundred thirty-six million, three hundred ninety-three thousand, seven hundred forty-two".