198795590 has 16 divisors (see below), whose sum is σ = 408951072. Its totient is φ = 68158464.

The previous prime is 198795581. The next prime is 198795607. The reversal of 198795590 is 95597891.

198795590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419899 + ... + 1420038.

It is an arithmetic number, because the mean of its divisors is an integer number (25559442).

Almost surely, 2^198795590 is an apocalyptic number.

198795590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198795590 is an abundant number, since it is smaller than the sum of its proper divisors (210155482).

198795590 is a wasteful number, since it uses less digits than its factorization.

198795590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839951.

The product of its (nonzero) digits is 1020600, while the sum is 53.

The square root of 198795590 is about 14099.4889978325. The cubic root of 198795590 is about 583.6272778868.

The spelling of 198795590 in words is "one hundred ninety-eight million, seven hundred ninety-five thousand, five hundred ninety".