3634247989 has 2 divisors, whose sum is σ = 3634247990. Its totient is φ = 3634247988.

The previous prime is 3634247977. The next prime is 3634247993. The reversal of 3634247989 is 9897424363.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3631870225 + 2377764 = 60265^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 3634247989 - 2²³ = 3625859381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3634247999) 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, 1817123994 + 1817123995.

It is an arithmetic number, because the mean of its divisors is an integer number (1817123995).

Almost surely, 2^3634247989 is an apocalyptic number.

It is an amenable number.

3634247989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3634247989 is an equidigital number, since it uses as much as digits as its factorization.

3634247989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 55.

The square root of 3634247989 is about 60284.7243420752. The cubic root of 3634247989 is about 1537.4636369570.

The spelling of 3634247989 in words is "three billion, six hundred thirty-four million, two hundred forty-seven thousand, nine hundred eighty-nine".