19838783868 has 24 divisors (see below), whose sum is σ = 46363873920. Its totient is φ = 6602445360.

The previous prime is 19838783863. The next prime is 19838783869. The reversal of 19838783868 is 86838783891.

It is a super-2 number, since 2×19838783868² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838783863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302438 + ... + 1317581.

It is an arithmetic number, because the mean of its divisors is an integer number (1931828080).

Almost surely, 2^19838783868 is an apocalyptic number.

It is an amenable number.

19838783868 is an abundant number, since it is smaller than the sum of its proper divisors (26525090052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19838783868 is a wasteful number, since it uses less digits than its factorization.

19838783868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620657 (or 2620655 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 69.

The spelling of 19838783868 in words is "nineteen billion, eight hundred thirty-eight million, seven hundred eighty-three thousand, eight hundred sixty-eight".