3664243789 has 2 divisors, whose sum is σ = 3664243790. Its totient is φ = 3664243788.

The previous prime is 3664243777. The next prime is 3664243819. The reversal of 3664243789 is 9873424663.

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., 3509614564 + 154629225 = 59242^2 + 12435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3664243789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3664243729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832121894 + 1832121895.

It is an arithmetic number, because the mean of its divisors is an integer number (1832121895).

Almost surely, 2^3664243789 is an apocalyptic number.

It is an amenable number.

3664243789 is a deficient number, since it is larger than the sum of its proper divisors (1).

3664243789 is an equidigital number, since it uses as much as digits as its factorization.

3664243789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 52.

The square root of 3664243789 is about 60532.9975220127. The cubic root of 3664243789 is about 1541.6819467191.

The spelling of 3664243789 in words is "three billion, six hundred sixty-four million, two hundred forty-three thousand, seven hundred eighty-nine".