18638903114 has 16 divisors (see below), whose sum is σ = 30136193640. Its totient is φ = 8594800320.

The previous prime is 18638903083. The next prime is 18638903147. The reversal of 18638903114 is 41130983681.

It can be written as a sum of positive squares in 4 ways, for example, as 9165190225 + 9473712889 = 95735^2 + 97333^2 .

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 7 ways as a sum of consecutive naturals, for example, 294377 + ... + 352044.

Almost surely, 2^18638903114 is an apocalyptic number.

18638903114 is a deficient number, since it is larger than the sum of its proper divisors (11497290526).

18638903114 is a wasteful number, since it uses less digits than its factorization.

18638903114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647545.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 18638903114 in words is "eighteen billion, six hundred thirty-eight million, nine hundred three thousand, one hundred fourteen".