198920259 has 16 divisors (see below), whose sum is σ = 296822400. Its totient is φ = 131656968.

The previous prime is 198920257. The next prime is 198920269. The reversal of 198920259 is 952029891.

198920259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198920259 - 2¹ = 198920257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198920257) 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, 22749 + ... + 30254.

It is an arithmetic number, because the mean of its divisors is an integer number (18551400).

Almost surely, 2^198920259 is an apocalyptic number.

198920259 is a deficient number, since it is larger than the sum of its proper divisors (97902141).

198920259 is a wasteful number, since it uses less digits than its factorization.

198920259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53151 (or 53145 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 198920259 is about 14103.9093516656. The cubic root of 198920259 is about 583.7492541415.

The spelling of 198920259 in words is "one hundred ninety-eight million, nine hundred twenty thousand, two hundred fifty-nine".