491932173 has 12 divisors (see below), whose sum is σ = 692249568. Its totient is φ = 310693320.

The previous prime is 491932163. The next prime is 491932183. The reversal of 491932173 is 371239194.

It is an interprime number because it is at equal distance from previous prime (491932163) and next prime (491932183).

It is not a de Polignac number, because 491932173 - 2⁵ = 491932141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491932153) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 226033 + ... + 228198.

It is an arithmetic number, because the mean of its divisors is an integer number (57687464).

Almost surely, 2^491932173 is an apocalyptic number.

It is an amenable number.

491932173 is a deficient number, since it is larger than the sum of its proper divisors (200317395).

491932173 is a wasteful number, since it uses less digits than its factorization.

491932173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454272 (or 454253 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 491932173 is about 22179.5440214627. The cubic root of 491932173 is about 789.4083980794.

The spelling of 491932173 in words is "four hundred ninety-one million, nine hundred thirty-two thousand, one hundred seventy-three".