91291130 has 32 divisors (see below), whose sum is σ = 194279040. Its totient is φ = 30219840.

The previous prime is 91291121. The next prime is 91291141. The reversal of 91291130 is 3119219.

It is a self number, because there is not a number n which added to its sum of digits gives 91291130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20456 + ... + 24515.

It is an arithmetic number, because the mean of its divisors is an integer number (6071220).

Almost surely, 2^91291130 is an apocalyptic number.

91291130 is an abundant number, since it is smaller than the sum of its proper divisors (102987910).

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

91291130 is a wasteful number, since it uses less digits than its factorization.

91291130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45014.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 91291130 is about 9554.6391873268. The cubic root of 91291130 is about 450.2732990040.

The spelling of 91291130 in words is "ninety-one million, two hundred ninety-one thousand, one hundred thirty".