19913138898 has 32 divisors (see below), whose sum is σ = 43368004800. Its totient is φ = 6071518656.

The previous prime is 19913138897. The next prime is 19913138909. The reversal of 19913138898 is 89883131991.

19913138898 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19913138897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3008361 + ... + 3014972.

It is an arithmetic number, because the mean of its divisors is an integer number (1355250150).

Almost surely, 2^19913138898 is an apocalyptic number.

19913138898 is an abundant number, since it is smaller than the sum of its proper divisors (23454865902).

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

19913138898 is a wasteful number, since it uses less digits than its factorization.

19913138898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023386.

The product of its digits is 3359232, while the sum is 60.

The spelling of 19913138898 in words is "nineteen billion, nine hundred thirteen million, one hundred thirty-eight thousand, eight hundred ninety-eight".