18849270198 has 32 divisors (see below), whose sum is σ = 41242234752. Its totient is φ = 5695712000.

The previous prime is 18849270179. The next prime is 18849270199. The reversal of 18849270198 is 89107294881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18849270199) 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, 381228 + ... + 427823.

It is an arithmetic number, because the mean of its divisors is an integer number (1288819836).

Almost surely, 2^18849270198 is an apocalyptic number.

18849270198 is an abundant number, since it is smaller than the sum of its proper divisors (22392964554).

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

18849270198 is a wasteful number, since it uses less digits than its factorization.

18849270198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809420.

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 18849270198 in words is "eighteen billion, eight hundred forty-nine million, two hundred seventy thousand, one hundred ninety-eight".