2491816159 has 24 divisors (see below), whose sum is σ = 3095072640. Its totient is φ = 1995429744.

The previous prime is 2491816141. The next prime is 2491816169. The reversal of 2491816159 is 9516181942.

It is a happy number.

It is not a de Polignac number, because 2491816159 - 2¹⁵ = 2491783391 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491816109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22752 + ... + 74170.

It is an arithmetic number, because the mean of its divisors is an integer number (128961360).

Almost surely, 2^2491816159 is an apocalyptic number.

2491816159 is a deficient number, since it is larger than the sum of its proper divisors (603256481).

2491816159 is a wasteful number, since it uses less digits than its factorization.

2491816159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51499 (or 51492 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

The square root of 2491816159 is about 49918.0945048987. The cubic root of 2491816159 is about 1355.7262318839.

The spelling of 2491816159 in words is "two billion, four hundred ninety-one million, eight hundred sixteen thousand, one hundred fifty-nine".