491837655 has 16 divisors (see below), whose sum is σ = 805242240. Its totient is φ = 256212768.

The previous prime is 491837623. The next prime is 491837663. The reversal of 491837655 is 556738194.

It is not a de Polignac number, because 491837655 - 2⁵ = 491837623 is a prime.

It is a congruent number.

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, 380625 + ... + 381914.

It is an arithmetic number, because the mean of its divisors is an integer number (50327640).

Almost surely, 2^491837655 is an apocalyptic number.

491837655 is a deficient number, since it is larger than the sum of its proper divisors (313404585).

491837655 is a wasteful number, since it uses less digits than its factorization.

491837655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762590.

The product of its digits is 907200, while the sum is 48.

The square root of 491837655 is about 22177.4131719639. The cubic root of 491837655 is about 789.3578368529.

The spelling of 491837655 in words is "four hundred ninety-one million, eight hundred thirty-seven thousand, six hundred fifty-five".