198092391 has 8 divisors (see below), whose sum is σ = 301855104. Its totient is φ = 113195640.

The previous prime is 198092369. The next prime is 198092393. The reversal of 198092391 is 193290891.

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

It is not a de Polignac number, because 198092391 - 2⁶ = 198092327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198092393) 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 7 ways as a sum of consecutive naturals, for example, 4716465 + ... + 4716506.

It is an arithmetic number, because the mean of its divisors is an integer number (37731888).

Almost surely, 2^198092391 is an apocalyptic number.

198092391 is a deficient number, since it is larger than the sum of its proper divisors (103762713).

198092391 is an equidigital number, since it uses as much as digits as its factorization.

198092391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432981.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 198092391 is about 14074.5298678144. The cubic root of 198092391 is about 582.9383105899.

The spelling of 198092391 in words is "one hundred ninety-eight million, ninety-two thousand, three hundred ninety-one".