18718374786 has 32 divisors (see below), whose sum is σ = 39084180480. Its totient is φ = 5965160784.

The previous prime is 18718374757. The next prime is 18718374793. The reversal of 18718374786 is 68747381781.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 248121 + ... + 314643.

It is an arithmetic number, because the mean of its divisors is an integer number (1221380640).

Almost surely, 2^18718374786 is an apocalyptic number.

18718374786 is an abundant number, since it is smaller than the sum of its proper divisors (20365805694).

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

18718374786 is a wasteful number, since it uses less digits than its factorization.

18718374786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68590.

The product of its digits is 12644352, while the sum is 60.

The spelling of 18718374786 in words is "eighteen billion, seven hundred eighteen million, three hundred seventy-four thousand, seven hundred eighty-six".