491932183 has 2 divisors, whose sum is σ = 491932184. Its totient is φ = 491932182.

The previous prime is 491932163. The next prime is 491932193. The reversal of 491932183 is 381239194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491932183 is a prime.

It is a super-2 number, since 2×491932183² = 483994545342290978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491932153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245966091 + 245966092.

It is an arithmetic number, because the mean of its divisors is an integer number (245966092).

Almost surely, 2^491932183 is an apocalyptic number.

491932183 is a deficient number, since it is larger than the sum of its proper divisors (1).

491932183 is an equidigital number, since it uses as much as digits as its factorization.

491932183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 491932183 is about 22179.5442468956. The cubic root of 491932183 is about 789.4084034284.

The spelling of 491932183 in words is "four hundred ninety-one million, nine hundred thirty-two thousand, one hundred eighty-three".