19941938504 has 16 divisors (see below), whose sum is σ = 38303114220. Its totient is φ = 9727774720.

The previous prime is 19941938453. The next prime is 19941938521. The reversal of 19941938504 is 40583914991.

It can be written as a sum of positive squares in 2 ways, for example, as 19908645604 + 33292900 = 141098^2 + 5770^2 .

It is a super-2 number, since 2×19941938504² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30398969 + ... + 30399624.

Almost surely, 2^19941938504 is an apocalyptic number.

It is an amenable number.

19941938504 is a deficient number, since it is larger than the sum of its proper divisors (18361175716).

19941938504 is a wasteful number, since it uses less digits than its factorization.

19941938504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60798640 (or 60798636 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 19941938504 in words is "nineteen billion, nine hundred forty-one million, nine hundred thirty-eight thousand, five hundred four".