91819196 has 12 divisors (see below), whose sum is σ = 183638448. Its totient is φ = 39351072.

The previous prime is 91819187. The next prime is 91819199. The reversal of 91819196 is 69191819.

91819196 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91819199) 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, 1639601 + ... + 1639656.

It is an arithmetic number, because the mean of its divisors is an integer number (15303204).

Almost surely, 2^91819196 is an apocalyptic number.

It is an amenable number.

91819196 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.

91819196 is a wasteful number, since it uses less digits than its factorization.

91819196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279268 (or 3279266 counting only the distinct ones).

The product of its digits is 34992, while the sum is 44.

The square root of 91819196 is about 9582.2333513644. The cubic root of 91819196 is about 451.1398199397.

The spelling of 91819196 in words is "ninety-one million, eight hundred nineteen thousand, one hundred ninety-six".