198256863 has 8 divisors (see below), whose sum is σ = 302105728. Its totient is φ = 113289624.

The previous prime is 198256837. The next prime is 198256879. The reversal of 198256863 is 368652891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198256863 - 2¹² = 198252767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198206863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4720381 + ... + 4720422.

It is an arithmetic number, because the mean of its divisors is an integer number (37763216).

Almost surely, 2^198256863 is an apocalyptic number.

198256863 is a deficient number, since it is larger than the sum of its proper divisors (103848865).

198256863 is an equidigital number, since it uses as much as digits as its factorization.

198256863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440813.

The product of its digits is 622080, while the sum is 48.

The square root of 198256863 is about 14080.3715504954. The cubic root of 198256863 is about 583.0995998191.

The spelling of 198256863 in words is "one hundred ninety-eight million, two hundred fifty-six thousand, eight hundred sixty-three".