2261544191 has 2 divisors, whose sum is σ = 2261544192. Its totient is φ = 2261544190.

The previous prime is 2261544121. The next prime is 2261544199. The reversal of 2261544191 is 1914451622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261544191 is a prime.

It is a super-2 number, since 2×2261544191² = 10229164255691688962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261544199) 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, 1130772095 + 1130772096.

It is an arithmetic number, because the mean of its divisors is an integer number (1130772096).

Almost surely, 2^2261544191 is an apocalyptic number.

2261544191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261544191 is an equidigital number, since it uses as much as digits as its factorization.

2261544191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 2261544191 is about 47555.6956735994. The cubic root of 2261544191 is about 1312.6079373787.

The spelling of 2261544191 in words is "two billion, two hundred sixty-one million, five hundred forty-four thousand, one hundred ninety-one".