491896995 has 64 divisors (see below), whose sum is σ = 845205504. Its totient is φ = 243855360.

The previous prime is 491896987. The next prime is 491897033. The reversal of 491896995 is 599698194.

It is not a de Polignac number, because 491896995 - 2³ = 491896987 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1459467 + ... + 1459803.

It is an arithmetic number, because the mean of its divisors is an integer number (13206336).

Almost surely, 2^491896995 is an apocalyptic number.

491896995 is a deficient number, since it is larger than the sum of its proper divisors (353308509).

491896995 is a wasteful number, since it uses less digits than its factorization.

491896995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 6298560, while the sum is 60.

The square root of 491896995 is about 22178.7509792594. The cubic root of 491896995 is about 789.3895808033.

The spelling of 491896995 in words is "four hundred ninety-one million, eight hundred ninety-six thousand, nine hundred ninety-five".