198219950 has 12 divisors (see below), whose sum is σ = 368689200. Its totient is φ = 79287960.

The previous prime is 198219937. The next prime is 198219997. The reversal of 198219950 is 59912891.

It is a happy number.

198219950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198219950² = 78582297156005000, which contains 22 as substring.

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, 1982150 + ... + 1982249.

It is an arithmetic number, because the mean of its divisors is an integer number (30724100).

Almost surely, 2^198219950 is an apocalyptic number.

198219950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198219950 is a deficient number, since it is larger than the sum of its proper divisors (170469250).

198219950 is a wasteful number, since it uses less digits than its factorization.

198219950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964411 (or 3964406 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 198219950 is about 14079.0606931002. The cubic root of 198219950 is about 583.0634089046.

The spelling of 198219950 in words is "one hundred ninety-eight million, two hundred nineteen thousand, nine hundred fifty".