491515095 has 16 divisors (see below), whose sum is σ = 786851712. Its totient is φ = 261998880.

The previous prime is 491515061. The next prime is 491515097. The reversal of 491515095 is 590515194.

491515095 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 491515095 - 2⁷ = 491514967 is a prime.

It is a super-2 number, since 2×491515095² = 483174177225718050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491515097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23380 + ... + 39110.

It is an arithmetic number, because the mean of its divisors is an integer number (49178232).

Almost surely, 2^491515095 is an apocalyptic number.

491515095 is a deficient number, since it is larger than the sum of its proper divisors (295336617).

491515095 is a wasteful number, since it uses less digits than its factorization.

491515095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17822.

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 491515095 is about 22170.1397153920. The cubic root of 491515095 is about 789.1852386099.

Subtracting 491515095 from its reverse (590515194), we obtain a palindrome (99000099).

The spelling of 491515095 in words is "four hundred ninety-one million, five hundred fifteen thousand, ninety-five".