2261894549 has 2 divisors, whose sum is σ = 2261894550. Its totient is φ = 2261894548.

The previous prime is 2261894533. The next prime is 2261894563. The reversal of 2261894549 is 9454981622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1798353649 + 463540900 = 42407^2 + 21530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261894549 - 2⁴ = 2261894533 is a prime.

It is a super-3 number, since 3×2261894549³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2261894497 and 2261894506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261894849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130947274 + 1130947275.

It is an arithmetic number, because the mean of its divisors is an integer number (1130947275).

Almost surely, 2^2261894549 is an apocalyptic number.

It is an amenable number.

2261894549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261894549 is an equidigital number, since it uses as much as digits as its factorization.

2261894549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 2261894549 is about 47559.3791906497. The cubic root of 2261894549 is about 1312.6757168701.

The spelling of 2261894549 in words is "two billion, two hundred sixty-one million, eight hundred ninety-four thousand, five hundred forty-nine".