19199285898 has 48 divisors (see below), whose sum is σ = 41604484896. Its totient is φ = 5903926080.

The previous prime is 19199285891. The next prime is 19199285899. The reversal of 19199285898 is 89858299191.

It is a super-2 number, since 2×19199285898² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19199285891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2050708 + ... + 2060048.

It is an arithmetic number, because the mean of its divisors is an integer number (866760102).

Almost surely, 2^19199285898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19199285898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20802242448).

19199285898 is an abundant number, since it is smaller than the sum of its proper divisors (22405198998).

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

19199285898 is a wasteful number, since it uses less digits than its factorization.

19199285898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399 (or 11386 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 69.

The spelling of 19199285898 in words is "nineteen billion, one hundred ninety-nine million, two hundred eighty-five thousand, eight hundred ninety-eight".