2491501847 has 2 divisors, whose sum is σ = 2491501848. Its totient is φ = 2491501846.

The previous prime is 2491501823. The next prime is 2491501877. The reversal of 2491501847 is 7481051942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491501847 - 2⁶ = 2491501783 is a prime.

It is a super-2 number, since 2×2491501847² = 12415162907208822818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491501807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245750923 + 1245750924.

It is an arithmetic number, because the mean of its divisors is an integer number (1245750924).

Almost surely, 2^2491501847 is an apocalyptic number.

2491501847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491501847 is an equidigital number, since it uses as much as digits as its factorization.

2491501847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2491501847 is about 49914.9461283892. The cubic root of 2491501847 is about 1355.6692267501.

The spelling of 2491501847 in words is "two billion, four hundred ninety-one million, five hundred one thousand, eight hundred forty-seven".