98320191 has 4 divisors (see below), whose sum is σ = 131093592. Its totient is φ = 65546792.

The previous prime is 98320181. The next prime is 98320199. The reversal of 98320191 is 19102389.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98320191 - 2¹⁹ = 97795903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98320199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16386696 + ... + 16386701.

It is an arithmetic number, because the mean of its divisors is an integer number (32773398).

Almost surely, 2^98320191 is an apocalyptic number.

98320191 is a deficient number, since it is larger than the sum of its proper divisors (32773401).

98320191 is a wasteful number, since it uses less digits than its factorization.

98320191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32773400.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 98320191 is about 9915.6538362329. The cubic root of 98320191 is about 461.5451990662.

The spelling of 98320191 in words is "ninety-eight million, three hundred twenty thousand, one hundred ninety-one".