7743542489 has 2 divisors, whose sum is σ = 7743542490. Its totient is φ = 7743542488.

The previous prime is 7743542461. The next prime is 7743542533. The reversal of 7743542489 is 9842453477.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7689886864 + 53655625 = 87692^2 + 7325^2 .

It is a cyclic number.

It is not a de Polignac number, because 7743542489 - 2²⁴ = 7726765273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7743542489.

It is not a weakly prime, because it can be changed into another prime (7743542419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3871771244 + 3871771245.

It is an arithmetic number, because the mean of its divisors is an integer number (3871771245).

Almost surely, 2^7743542489 is an apocalyptic number.

It is an amenable number.

7743542489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7743542489 is an equidigital number, since it uses as much as digits as its factorization.

7743542489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 53.

The square root of 7743542489 is about 87997.4004672865. The cubic root of 7743542489 is about 1978.3960149376.

The spelling of 7743542489 in words is "seven billion, seven hundred forty-three million, five hundred forty-two thousand, four hundred eighty-nine".