491853696 has 32 divisors (see below), whose sum is σ = 1306487400. Its totient is φ = 163951104.

The previous prime is 491853683. The next prime is 491853709. The reversal of 491853696 is 696358194.

It is an interprime number because it is at equal distance from previous prime (491853683) and next prime (491853709).

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640051 + ... + 640818.

Almost surely, 2^491853696 is an apocalyptic number.

It is an amenable number.

491853696 is an abundant number, since it is smaller than the sum of its proper divisors (814633704).

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

491853696 is a wasteful number, since it uses less digits than its factorization.

491853696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280886 (or 1280874 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 491853696 is about 22177.7748207524. The cubic root of 491853696 is about 789.3664182423.

The spelling of 491853696 in words is "four hundred ninety-one million, eight hundred fifty-three thousand, six hundred ninety-six".