7549683989 has 2 divisors, whose sum is σ = 7549683990. Its totient is φ = 7549683988.

The previous prime is 7549683959. The next prime is 7549684001. The reversal of 7549683989 is 9893869457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7541532964 + 8151025 = 86842^2 + 2855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7549683989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7549683919) 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, 3774841994 + 3774841995.

It is an arithmetic number, because the mean of its divisors is an integer number (3774841995).

Almost surely, 2^7549683989 is an apocalyptic number.

It is an amenable number.

7549683989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7549683989 is an equidigital number, since it uses as much as digits as its factorization.

7549683989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 68.

The square root of 7549683989 is about 86888.9175269205. The cubic root of 7549683989 is about 1961.7466719247.

The spelling of 7549683989 in words is "seven billion, five hundred forty-nine million, six hundred eighty-three thousand, nine hundred eighty-nine".