7489637849 has 2 divisors, whose sum is σ = 7489637850. Its totient is φ = 7489637848.

The previous prime is 7489637843. The next prime is 7489637863. The reversal of 7489637849 is 9487369847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7403742025 + 85895824 = 86045^2 + 9268^2 .

It is an emirp because it is prime and its reverse (9487369847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7489637849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7489637843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744818924 + 3744818925.

It is an arithmetic number, because the mean of its divisors is an integer number (3744818925).

Almost surely, 2^7489637849 is an apocalyptic number.

It is an amenable number.

7489637849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7489637849 is an equidigital number, since it uses as much as digits as its factorization.

7489637849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 65.

The square root of 7489637849 is about 86542.6937932949. The cubic root of 7489637849 is about 1956.5319284406.

The spelling of 7489637849 in words is "seven billion, four hundred eighty-nine million, six hundred thirty-seven thousand, eight hundred forty-nine".