6604838389 has 2 divisors, whose sum is σ = 6604838390. Its totient is φ = 6604838388.

The previous prime is 6604838377. The next prime is 6604838411. The reversal of 6604838389 is 9838384066.

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., 3391082289 + 3213756100 = 58233^2 + 56690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6604838389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6604838689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302419194 + 3302419195.

It is an arithmetic number, because the mean of its divisors is an integer number (3302419195).

Almost surely, 2^6604838389 is an apocalyptic number.

It is an amenable number.

6604838389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604838389 is an equidigital number, since it uses as much as digits as its factorization.

6604838389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 6604838389 is about 81270.1568166323. The cubic root of 6604838389 is about 1876.2357141615.

The spelling of 6604838389 in words is "six billion, six hundred four million, eight hundred thirty-eight thousand, three hundred eighty-nine".