7834043549 has 2 divisors, whose sum is σ = 7834043550. Its totient is φ = 7834043548.

The previous prime is 7834043543. The next prime is 7834043551. The reversal of 7834043549 is 9453404387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7422684025 + 411359524 = 86155^2 + 20282^2 .

It is a cyclic number.

It is not a de Polignac number, because 7834043549 - 2⁸ = 7834043293 is a prime.

It is a super-2 number, since 2×7834043549² (a number of 21 digits) contains 22 as substring.

Together with 7834043551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7834043543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3917021774 + 3917021775.

It is an arithmetic number, because the mean of its divisors is an integer number (3917021775).

Almost surely, 2^7834043549 is an apocalyptic number.

It is an amenable number.

7834043549 is a deficient number, since it is larger than the sum of its proper divisors (1).

7834043549 is an equidigital number, since it uses as much as digits as its factorization.

7834043549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The square root of 7834043549 is about 88510.1324651590. The cubic root of 7834043549 is about 1986.0735477962.

The spelling of 7834043549 in words is "seven billion, eight hundred thirty-four million, forty-three thousand, five hundred forty-nine".