2491273589 has 16 divisors (see below), whose sum is σ = 2998237440. Its totient is φ = 2023781760.

The previous prime is 2491273583. The next prime is 2491273633. The reversal of 2491273589 is 9853721942.

It is not a de Polignac number, because 2491273589 - 2⁴ = 2491273573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491273583) 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, 53432 + ... + 88529.

It is an arithmetic number, because the mean of its divisors is an integer number (187389840).

Almost surely, 2^2491273589 is an apocalyptic number.

It is an amenable number.

2491273589 is a deficient number, since it is larger than the sum of its proper divisors (506963851).

2491273589 is a wasteful number, since it uses less digits than its factorization.

2491273589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142100.

The product of its digits is 1088640, while the sum is 50.

The square root of 2491273589 is about 49912.6596065567. The cubic root of 2491273589 is about 1355.6278257778.

The spelling of 2491273589 in words is "two billion, four hundred ninety-one million, two hundred seventy-three thousand, five hundred eighty-nine".