198913100 has 18 divisors (see below), whose sum is σ = 431641644. Its totient is φ = 79565200.

The previous prime is 198913087. The next prime is 198913123. The reversal of 198913100 is 1319891.

It is a super-2 number, since 2×198913100² = 79132842703220000, which contains 22 as substring.

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, 994466 + ... + 994665.

Almost surely, 2^198913100 is an apocalyptic number.

198913100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198913100 is an abundant number, since it is smaller than the sum of its proper divisors (232728544).

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

198913100 is a wasteful number, since it uses less digits than its factorization.

198913100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989145 (or 1989138 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 198913100 is about 14103.6555545008. The cubic root of 198913100 is about 583.7422511493.

The spelling of 198913100 in words is "one hundred ninety-eight million, nine hundred thirteen thousand, one hundred".