7543136849 has 2 divisors, whose sum is σ = 7543136850. Its totient is φ = 7543136848.

The previous prime is 7543136837. The next prime is 7543136863. The reversal of 7543136849 is 9486313457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4570706449 + 2972430400 = 67607^2 + 54520^2 .

It is an emirp because it is prime and its reverse (9486313457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7543136849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7543136797 and 7543136806.

It is not a weakly prime, because it can be changed into another prime (7543130849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3771568424 + 3771568425.

It is an arithmetic number, because the mean of its divisors is an integer number (3771568425).

Almost surely, 2^7543136849 is an apocalyptic number.

It is an amenable number.

7543136849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7543136849 is an equidigital number, since it uses as much as digits as its factorization.

7543136849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 7543136849 is about 86851.2340096558. The cubic root of 7543136849 is about 1961.1794276679.

The spelling of 7543136849 in words is "seven billion, five hundred forty-three million, one hundred thirty-six thousand, eight hundred forty-nine".