491914167 has 4 divisors (see below), whose sum is σ = 655885560. Its totient is φ = 327942776.

The previous prime is 491914151. The next prime is 491914177. The reversal of 491914167 is 761419194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491914167 - 2⁴ = 491914151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491914117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81985692 + ... + 81985697.

It is an arithmetic number, because the mean of its divisors is an integer number (163971390).

Almost surely, 2^491914167 is an apocalyptic number.

491914167 is a deficient number, since it is larger than the sum of its proper divisors (163971393).

491914167 is a wasteful number, since it uses less digits than its factorization.

491914167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163971392.

The product of its digits is 54432, while the sum is 42.

The square root of 491914167 is about 22179.1381031816. The cubic root of 491914167 is about 789.3987664934.

The spelling of 491914167 in words is "four hundred ninety-one million, nine hundred fourteen thousand, one hundred sixty-seven".