198821294 has 32 divisors (see below), whose sum is σ = 348856320. Its totient is φ = 83226528.

The previous prime is 198821281. The next prime is 198821297. The reversal of 198821294 is 492128891.

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 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, 118292 + ... + 119960.

It is an arithmetic number, because the mean of its divisors is an integer number (10901760).

Almost surely, 2^198821294 is an apocalyptic number.

198821294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

198821294 is a deficient number, since it is larger than the sum of its proper divisors (150035026).

198821294 is a wasteful number, since it uses less digits than its factorization.

198821294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872.

The product of its digits is 82944, while the sum is 44.

The square root of 198821294 is about 14100.4004907662. The cubic root of 198821294 is about 583.6524308744.

The spelling of 198821294 in words is "one hundred ninety-eight million, eight hundred twenty-one thousand, two hundred ninety-four".