491436498 has 32 divisors (see below), whose sum is σ = 1125210240. Its totient is φ = 140169600.

The previous prime is 491436497. The next prime is 491436509. The reversal of 491436498 is 894634194.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (491436497) 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, 15508 + ... + 34976.

It is an arithmetic number, because the mean of its divisors is an integer number (35162820).

Almost surely, 2^491436498 is an apocalyptic number.

491436498 is an abundant number, since it is smaller than the sum of its proper divisors (633773742).

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

491436498 is a wasteful number, since it uses less digits than its factorization.

491436498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20082.

The product of its digits is 746496, while the sum is 48.

The square root of 491436498 is about 22168.3670575891. The cubic root of 491436498 is about 789.1431707946.

The spelling of 491436498 in words is "four hundred ninety-one million, four hundred thirty-six thousand, four hundred ninety-eight".