491111364 has 48 divisors (see below), whose sum is σ = 1200028032. Its totient is φ = 156026112.

The previous prime is 491111353. The next prime is 491111377. The reversal of 491111364 is 463111194.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77832 + ... + 83904.

It is an arithmetic number, because the mean of its divisors is an integer number (25000584).

Almost surely, 2^491111364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491111364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600014016).

491111364 is an abundant number, since it is smaller than the sum of its proper divisors (708916668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491111364 is a wasteful number, since it uses less digits than its factorization.

491111364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396 (or 6394 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 491111364 is about 22161.0325571712. The cubic root of 491111364 is about 788.9691002338.

The spelling of 491111364 in words is "four hundred ninety-one million, one hundred eleven thousand, three hundred sixty-four".