91482181 has 8 divisors (see below), whose sum is σ = 104707904. Its totient is φ = 78295680.

The previous prime is 91482133. The next prime is 91482191. The reversal of 91482181 is 18128419.

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

It is a cyclic number.

It is not a de Polignac number, because 91482181 - 2⁹ = 91481669 is a prime.

It is a super-2 number, since 2×91482181² = 16737978881033522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91482101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4620 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (13088488).

Almost surely, 2^91482181 is an apocalyptic number.

It is an amenable number.

91482181 is a deficient number, since it is larger than the sum of its proper divisors (13225723).

91482181 is a wasteful number, since it uses less digits than its factorization.

91482181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19611.

The product of its digits is 4608, while the sum is 34.

The square root of 91482181 is about 9564.6317754527. The cubic root of 91482181 is about 450.5871857366.

The spelling of 91482181 in words is "ninety-one million, four hundred eighty-two thousand, one hundred eighty-one".