91638482 has 32 divisors (see below), whose sum is σ = 157422720. Its totient is φ = 39657600.

The previous prime is 91638473. The next prime is 91638487. The reversal of 91638482 is 28483619.

It is a super-2 number, since 2×91638482² = 16795222766528648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91638487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49982 + ... + 51782.

It is an arithmetic number, because the mean of its divisors is an integer number (4919460).

Almost surely, 2^91638482 is an apocalyptic number.

91638482 is a deficient number, since it is larger than the sum of its proper divisors (65784238).

91638482 is a wasteful number, since it uses less digits than its factorization.

91638482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938.

The product of its digits is 82944, while the sum is 41.

The square root of 91638482 is about 9572.7990681932. The cubic root of 91638482 is about 450.8436551959.

The spelling of 91638482 in words is "ninety-one million, six hundred thirty-eight thousand, four hundred eighty-two".