491965134 has 8 divisors (see below), whose sum is σ = 983930280. Its totient is φ = 163988376.

The previous prime is 491965039. The next prime is 491965139. The reversal of 491965134 is 431569194.

It is a sphenic number, since it is the product of 3 distinct primes.

491965134 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491965139) 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, 40997089 + ... + 40997100.

It is an arithmetic number, because the mean of its divisors is an integer number (122991285).

Almost surely, 2^491965134 is an apocalyptic number.

491965134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

491965134 is a wasteful number, since it uses less digits than its factorization.

491965134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81994194.

The product of its digits is 116640, while the sum is 42.

The square root of 491965134 is about 22180.2870585572. The cubic root of 491965134 is about 789.4260286326.

The spelling of 491965134 in words is "four hundred ninety-one million, nine hundred sixty-five thousand, one hundred thirty-four".