91818360 has 160 divisors (see below), whose sum is σ = 326961360. Its totient is φ = 23030784.

The previous prime is 91818329. The next prime is 91818371. The reversal of 91818360 is 6381819.

It is a super-2 number, since 2×91818360² = 16861222466179200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 54247 + ... + 55913.

Almost surely, 2^91818360 is an apocalyptic number.

91818360 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91818360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163480680).

91818360 is an abundant number, since it is smaller than the sum of its proper divisors (235143000).

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

91818360 is a wasteful number, since it uses less digits than its factorization.

91818360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 91818360 is about 9582.1897288668. The cubic root of 91818360 is about 451.1384507487.

The spelling of 91818360 in words is "ninety-one million, eight hundred eighteen thousand, three hundred sixty".