198361930 has 32 divisors (see below), whose sum is σ = 389950848. Its totient is φ = 72206400.

The previous prime is 198361873. The next prime is 198361939. The reversal of 198361930 is 39163891.

198361930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (198361939) 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, 1516 + ... + 19975.

It is an arithmetic number, because the mean of its divisors is an integer number (12185964).

Almost surely, 2^198361930 is an apocalyptic number.

198361930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198361930 is a deficient number, since it is larger than the sum of its proper divisors (191588918).

198361930 is a wasteful number, since it uses less digits than its factorization.

198361930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21582.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 198361930 is about 14084.1020303035. The cubic root of 198361930 is about 583.2025869330.

The spelling of 198361930 in words is "one hundred ninety-eight million, three hundred sixty-one thousand, nine hundred thirty".