18693140204 has 12 divisors (see below), whose sum is σ = 32884268928. Its totient is φ = 9297634800.

The previous prime is 18693140203. The next prime is 18693140251. The reversal of 18693140204 is 40204139681.

It is not an unprimeable number, because it can be changed into a prime (18693140201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12232967 + ... + 12234494.

It is an arithmetic number, because the mean of its divisors is an integer number (2740355744).

Almost surely, 2^18693140204 is an apocalyptic number.

It is an amenable number.

18693140204 is a deficient number, since it is larger than the sum of its proper divisors (14191128724).

18693140204 is a wasteful number, since it uses less digits than its factorization.

18693140204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24467656 (or 24467654 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

Adding to 18693140204 its reverse (40204139681), we get a palindrome (58897279885).

The spelling of 18693140204 in words is "eighteen billion, six hundred ninety-three million, one hundred forty thousand, two hundred four".