91198315 has 12 divisors (see below), whose sum is σ = 118504944. Its totient is φ = 67345824.

The previous prime is 91198291. The next prime is 91198321. The reversal of 91198315 is 51389119.

It is a happy number.

It is not a de Polignac number, because 91198315 - 2⁹ = 91197803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 53119 + ... + 54808.

It is an arithmetic number, because the mean of its divisors is an integer number (9875412).

Almost surely, 2^91198315 is an apocalyptic number.

91198315 is a deficient number, since it is larger than the sum of its proper divisors (27306629).

91198315 is a wasteful number, since it uses less digits than its factorization.

91198315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107958 (or 107945 counting only the distinct ones).

The product of its digits is 9720, while the sum is 37.

The square root of 91198315 is about 9549.7808875387. The cubic root of 91198315 is about 450.1206507767.

The spelling of 91198315 in words is "ninety-one million, one hundred ninety-eight thousand, three hundred fifteen".