1198388198 has 12 divisors (see below), whose sum is σ = 2091065292. Its totient is φ = 513594900.

The previous prime is 1198388143. The next prime is 1198388203. The reversal of 1198388198 is 8918838911.

It is a super-2 number, since 2×1198388198² = 2872268546211374408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6114128 + ... + 6114323.

It is an arithmetic number, because the mean of its divisors is an integer number (174255441).

Almost surely, 2^1198388198 is an apocalyptic number.

1198388198 is a deficient number, since it is larger than the sum of its proper divisors (892677094).

1198388198 is a wasteful number, since it uses less digits than its factorization.

1198388198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12228467 (or 12228460 counting only the distinct ones).

The product of its digits is 995328, while the sum is 56.

The square root of 1198388198 is about 34617.7439761750. The cubic root of 1198388198 is about 1062.1825795611.

The spelling of 1198388198 in words is "one billion, one hundred ninety-eight million, three hundred eighty-eight thousand, one hundred ninety-eight".