198821295 has 24 divisors (see below), whose sum is σ = 344962800. Its totient is φ = 105933696.

The previous prime is 198821281. The next prime is 198821297. The reversal of 198821295 is 592128891.

It is not a de Polignac number, because 198821295 - 2²⁶ = 131712431 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 198821295.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198821297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71491 + ... + 74219.

It is an arithmetic number, because the mean of its divisors is an integer number (14373450).

Almost surely, 2^198821295 is an apocalyptic number.

198821295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198821295 is a deficient number, since it is larger than the sum of its proper divisors (146141505).

198821295 is a wasteful number, since it uses less digits than its factorization.

198821295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359 (or 4356 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 198821295 is about 14100.4005262262. The cubic root of 198821295 is about 583.6524318529.

The spelling of 198821295 in words is "one hundred ninety-eight million, eight hundred twenty-one thousand, two hundred ninety-five".