2491523159 has 2 divisors, whose sum is σ = 2491523160. Its totient is φ = 2491523158.

The previous prime is 2491523149. The next prime is 2491523201. The reversal of 2491523159 is 9513251942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491523159 - 2²⁰ = 2490474583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491523149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245761579 + 1245761580.

It is an arithmetic number, because the mean of its divisors is an integer number (1245761580).

Almost surely, 2^2491523159 is an apocalyptic number.

2491523159 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491523159 is an equidigital number, since it uses as much as digits as its factorization.

2491523159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 2491523159 is about 49915.1596110841. The cubic root of 2491523159 is about 1355.6730921482.

The spelling of 2491523159 in words is "two billion, four hundred ninety-one million, five hundred twenty-three thousand, one hundred fifty-nine".