2491501859 has 16 divisors (see below), whose sum is σ = 3110968320. Its totient is φ = 1938504960.

The previous prime is 2491501847. The next prime is 2491501877. The reversal of 2491501859 is 9581051942.

It is not a de Polignac number, because 2491501859 - 2⁸ = 2491501603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491501879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27782 + ... + 75860.

It is an arithmetic number, because the mean of its divisors is an integer number (194435520).

Almost surely, 2^2491501859 is an apocalyptic number.

2491501859 is a deficient number, since it is larger than the sum of its proper divisors (619466461).

2491501859 is a wasteful number, since it uses less digits than its factorization.

2491501859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48770.

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 2491501859 is about 49914.9462485937. The cubic root of 2491501859 is about 1355.6692289265.

The spelling of 2491501859 in words is "two billion, four hundred ninety-one million, five hundred one thousand, eight hundred fifty-nine".