109198198 has 4 divisors (see below), whose sum is σ = 163797300. Its totient is φ = 54599098.

The previous prime is 109198189. The next prime is 109198207. The reversal of 109198198 is 891891901.

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

It is an interprime number because it is at equal distance from previous prime (109198189) and next prime (109198207).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27299548 + ... + 27299551.

It is an arithmetic number, because the mean of its divisors is an integer number (40949325).

Almost surely, 2^109198198 is an apocalyptic number.

109198198 is a deficient number, since it is larger than the sum of its proper divisors (54599102).

109198198 is an equidigital number, since it uses as much as digits as its factorization.

109198198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54599101.

The product of its (nonzero) digits is 46656, while the sum is 46.

The square root of 109198198 is about 10449.7941606522. The cubic root of 109198198 is about 477.9749728673.

The spelling of 109198198 in words is "one hundred nine million, one hundred ninety-eight thousand, one hundred ninety-eight".