198595023 has 16 divisors (see below), whose sum is σ = 292937472. Its totient is φ = 118664000.

The previous prime is 198595009. The next prime is 198595031. The reversal of 198595023 is 320595891.

It is a cyclic number.

It is not a de Polignac number, because 198595023 - 2¹³ = 198586831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198595073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40038 + ... + 44723.

It is an arithmetic number, because the mean of its divisors is an integer number (18308592).

Almost surely, 2^198595023 is an apocalyptic number.

198595023 is a deficient number, since it is larger than the sum of its proper divisors (94342449).

198595023 is a wasteful number, since it uses less digits than its factorization.

198595023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84846.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 198595023 is about 14092.3746402088. The cubic root of 198595023 is about 583.4309359042.

The spelling of 198595023 in words is "one hundred ninety-eight million, five hundred ninety-five thousand, twenty-three".