3138323989 has 2 divisors, whose sum is σ = 3138323990. Its totient is φ = 3138323988.

The previous prime is 3138323983. The next prime is 3138323999. The reversal of 3138323989 is 9893238313.

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., 2100388900 + 1037935089 = 45830^2 + 32217^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138323989 - 2⁵ = 3138323957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138323983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569161994 + 1569161995.

It is an arithmetic number, because the mean of its divisors is an integer number (1569161995).

Almost surely, 2^3138323989 is an apocalyptic number.

It is an amenable number.

3138323989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138323989 is an equidigital number, since it uses as much as digits as its factorization.

3138323989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 3138323989 is about 56020.7460589378. The cubic root of 3138323989 is about 1464.0837672726.

The spelling of 3138323989 in words is "three billion, one hundred thirty-eight million, three hundred twenty-three thousand, nine hundred eighty-nine".