198906383 has 8 divisors (see below), whose sum is σ = 225481200. Its totient is φ = 173942208.

The previous prime is 198906377. The next prime is 198906391. The reversal of 198906383 is 383609891.

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

It is a cyclic number.

It is not a de Polignac number, because 198906383 - 2⁶ = 198906319 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 (198906313) 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, 402398 + ... + 402891.

It is an arithmetic number, because the mean of its divisors is an integer number (28185150).

Almost surely, 2^198906383 is an apocalyptic number.

198906383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

198906383 is a deficient number, since it is larger than the sum of its proper divisors (26574817).

198906383 is a wasteful number, since it uses less digits than its factorization.

198906383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805321.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 198906383 is about 14103.4174227384. The cubic root of 198906383 is about 583.7356803724.

The spelling of 198906383 in words is "one hundred ninety-eight million, nine hundred six thousand, three hundred eighty-three".