198350390 has 64 divisors (see below), whose sum is σ = 450883584. Its totient is φ = 61214208.

The previous prime is 198350363. The next prime is 198350393. The reversal of 198350390 is 93053891.

198350390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198350393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23747 + ... + 30993.

It is an arithmetic number, because the mean of its divisors is an integer number (7045056).

Almost surely, 2^198350390 is an apocalyptic number.

198350390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198350390 is an abundant number, since it is smaller than the sum of its proper divisors (252533194).

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

198350390 is a wasteful number, since it uses less digits than its factorization.

198350390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 198350390 is about 14083.6923425641. The cubic root of 198350390 is about 583.1912771546.

The spelling of 198350390 in words is "one hundred ninety-eight million, three hundred fifty thousand, three hundred ninety".