198444670 has 16 divisors (see below), whose sum is σ = 357754320. Its totient is φ = 79254784.

The previous prime is 198444647. The next prime is 198444691. The reversal of 198444670 is 76444891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8467 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (22359645).

Almost surely, 2^198444670 is an apocalyptic number.

198444670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198444670 is a deficient number, since it is larger than the sum of its proper divisors (159309650).

198444670 is a wasteful number, since it uses less digits than its factorization.

198444670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30779.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 198444670 is about 14087.0390785289. The cubic root of 198444670 is about 583.2836634352.

The spelling of 198444670 in words is "one hundred ninety-eight million, four hundred forty-four thousand, six hundred seventy".