1389795313 has 2 divisors, whose sum is σ = 1389795314. Its totient is φ = 1389795312.

The previous prime is 1389795301. The next prime is 1389795331. The reversal of 1389795313 is 3135979831.

It is a happy number.

Together with next prime (1389795331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274275809 + 115519504 = 35697^2 + 10748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389795313 - 2²¹ = 1387698161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1389795353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694897656 + 694897657.

It is an arithmetic number, because the mean of its divisors is an integer number (694897657).

Almost surely, 2^1389795313 is an apocalyptic number.

It is an amenable number.

1389795313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389795313 is an equidigital number, since it uses as much as digits as its factorization.

1389795313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 1389795313 is about 37279.9585970800. The cubic root of 1389795313 is about 1115.9642467552.

The spelling of 1389795313 in words is "one billion, three hundred eighty-nine million, seven hundred ninety-five thousand, three hundred thirteen".