2491857343 has 2 divisors, whose sum is σ = 2491857344. Its totient is φ = 2491857342.

The previous prime is 2491857323. The next prime is 2491857377. The reversal of 2491857343 is 3437581942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491857343 - 2²⁹ = 1954986431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2491857293 and 2491857302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491857323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245928671 + 1245928672.

It is an arithmetic number, because the mean of its divisors is an integer number (1245928672).

Almost surely, 2^2491857343 is an apocalyptic number.

2491857343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491857343 is an equidigital number, since it uses as much as digits as its factorization.

2491857343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 2491857343 is about 49918.5070189404. The cubic root of 2491857343 is about 1355.7337008568.

The spelling of 2491857343 in words is "two billion, four hundred ninety-one million, eight hundred fifty-seven thousand, three hundred forty-three".