18838997703 has 6 divisors (see below), whose sum is σ = 27211885584. Its totient is φ = 12559331796.

The previous prime is 18838997689. The next prime is 18838997707. The reversal of 18838997703 is 30779983881.

18838997703 is a `hidden beast` number, since 188 + 389 + 9 + 7 + 70 + 3 = 666.

It is not a de Polignac number, because 18838997703 - 2³² = 14544030407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18838997707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1046610975 + ... + 1046610992.

It is an arithmetic number, because the mean of its divisors is an integer number (4535314264).

Almost surely, 2^18838997703 is an apocalyptic number.

18838997703 is a deficient number, since it is larger than the sum of its proper divisors (8372887881).

18838997703 is a wasteful number, since it uses less digits than its factorization.

18838997703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093221973 (or 2093221970 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 18838997703 in words is "eighteen billion, eight hundred thirty-eight million, nine hundred ninety-seven thousand, seven hundred three".