1385938079 has 2 divisors, whose sum is σ = 1385938080. Its totient is φ = 1385938078.

The previous prime is 1385938061. The next prime is 1385938091. The reversal of 1385938079 is 9708395831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385938079 - 2²⁸ = 1117502623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1385938079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385938019) 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, 692969039 + 692969040.

It is an arithmetic number, because the mean of its divisors is an integer number (692969040).

Almost surely, 2^1385938079 is an apocalyptic number.

1385938079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385938079 is an equidigital number, since it uses as much as digits as its factorization.

1385938079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 1385938079 is about 37228.1893059547. The cubic root of 1385938079 is about 1114.9308754831.

The spelling of 1385938079 in words is "one billion, three hundred eighty-five million, nine hundred thirty-eight thousand, seventy-nine".