9738123139 has 2 divisors, whose sum is σ = 9738123140. Its totient is φ = 9738123138.

The previous prime is 9738123127. The next prime is 9738123151. The reversal of 9738123139 is 9313218379.

It is a balanced prime because it is at equal distance from previous prime (9738123127) and next prime (9738123151).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9738123139 is a prime.

It is not a weakly prime, because it can be changed into another prime (9738123739) 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, 4869061569 + 4869061570.

It is an arithmetic number, because the mean of its divisors is an integer number (4869061570).

Almost surely, 2^9738123139 is an apocalyptic number.

9738123139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9738123139 is an equidigital number, since it uses as much as digits as its factorization.

9738123139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 9738123139 is about 98681.9291410540. The cubic root of 9738123139 is about 2135.4615392701.

The spelling of 9738123139 in words is "nine billion, seven hundred thirty-eight million, one hundred twenty-three thousand, one hundred thirty-nine".