491168867 has 16 divisors (see below), whose sum is σ = 609945600. Its totient is φ = 385974720.

The previous prime is 491168849. The next prime is 491168897. The reversal of 491168867 is 768861194.

It is a cyclic number.

It is not a de Polignac number, because 491168867 - 2²² = 486974563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491168897) 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, 55442 + ... + 63687.

It is an arithmetic number, because the mean of its divisors is an integer number (38121600).

Almost surely, 2^491168867 is an apocalyptic number.

491168867 is a deficient number, since it is larger than the sum of its proper divisors (118776733).

491168867 is a wasteful number, since it uses less digits than its factorization.

491168867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119186.

The product of its digits is 580608, while the sum is 50.

The square root of 491168867 is about 22162.3299091048. The cubic root of 491168867 is about 788.9998918376. Note that the first 3 decimals are identical.

The spelling of 491168867 in words is "four hundred ninety-one million, one hundred sixty-eight thousand, eight hundred sixty-seven".