20199489198 has 16 divisors (see below), whose sum is σ = 46170261120. Its totient is φ = 5771282616.

The previous prime is 20199489181. The next prime is 20199489227. The reversal of 20199489198 is 89198499102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240470068 + ... + 240470151.

It is an arithmetic number, because the mean of its divisors is an integer number (2885641320).

Almost surely, 2^20199489198 is an apocalyptic number.

20199489198 is an abundant number, since it is smaller than the sum of its proper divisors (25970771922).

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

20199489198 is a wasteful number, since it uses less digits than its factorization.

20199489198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480940231.

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

It can be divided in two parts, 201994 and 89198, that added together give a palindrome (291192).

The spelling of 20199489198 in words is "twenty billion, one hundred ninety-nine million, four hundred eighty-nine thousand, one hundred ninety-eight".