19098020198 has 4 divisors (see below), whose sum is σ = 28647030300. Its totient is φ = 9549010098.

The previous prime is 19098020197. The next prime is 19098020203. The reversal of 19098020198 is 89102089091.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19098020197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4774505048 + ... + 4774505051.

It is an arithmetic number, because the mean of its divisors is an integer number (7161757575).

Almost surely, 2^19098020198 is an apocalyptic number.

19098020198 is a deficient number, since it is larger than the sum of its proper divisors (9549010102).

19098020198 is an equidigital number, since it uses as much as digits as its factorization.

19098020198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549010101.

The product of its (nonzero) digits is 93312, while the sum is 47.

The spelling of 19098020198 in words is "nineteen billion, ninety-eight million, twenty thousand, one hundred ninety-eight".