91718994 has 8 divisors (see below), whose sum is σ = 183438000. Its totient is φ = 30572996.

The previous prime is 91718993. The next prime is 91718999. The reversal of 91718994 is 49981719.

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

91718994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (91718993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7643244 + ... + 7643255.

It is an arithmetic number, because the mean of its divisors is an integer number (22929750).

Almost surely, 2^91718994 is an apocalyptic number.

91718994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91718994 is a wasteful number, since it uses less digits than its factorization.

91718994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15286504.

The product of its digits is 163296, while the sum is 48.

The square root of 91718994 is about 9577.0033935464. The cubic root of 91718994 is about 450.9756510503.

The spelling of 91718994 in words is "ninety-one million, seven hundred eighteen thousand, nine hundred ninety-four".