2049242491 has 2 divisors, whose sum is σ = 2049242492. Its totient is φ = 2049242490.

The previous prime is 2049242417. The next prime is 2049242501. The reversal of 2049242491 is 1942429402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2049242491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2049242491.

It is not a weakly prime, because it can be changed into another prime (2049242791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024621245 + 1024621246.

It is an arithmetic number, because the mean of its divisors is an integer number (1024621246).

Almost surely, 2^2049242491 is an apocalyptic number.

2049242491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2049242491 is an equidigital number, since it uses as much as digits as its factorization.

2049242491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 2049242491 is about 45268.5596302776. The cubic root of 2049242491 is about 1270.1776036570.

The spelling of 2049242491 in words is "two billion, forty-nine million, two hundred forty-two thousand, four hundred ninety-one".