19838783797 has 12 divisors (see below), whose sum is σ = 23481686176. Its totient is φ = 16418298960.

The previous prime is 19838783759. The next prime is 19838783827. The reversal of 19838783797 is 79738783891.

It is not a de Polignac number, because 19838783797 - 2²⁷ = 19704566069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838787797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1679079 + ... + 1690852.

Almost surely, 2^19838783797 is an apocalyptic number.

It is an amenable number.

19838783797 is a deficient number, since it is larger than the sum of its proper divisors (3642902379).

19838783797 is an equidigital number, since it uses as much as digits as its factorization.

19838783797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369996 (or 3369967 counting only the distinct ones).

The product of its digits is 128024064, while the sum is 70.

The spelling of 19838783797 in words is "nineteen billion, eight hundred thirty-eight million, seven hundred eighty-three thousand, seven hundred ninety-seven".