1395688313 has 2 divisors, whose sum is σ = 1395688314. Its totient is φ = 1395688312.

The previous prime is 1395688309. The next prime is 1395688337. The reversal of 1395688313 is 3138865931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089858169 + 305830144 = 33013^2 + 17488^2 .

It is an emirp because it is prime and its reverse (3138865931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1395688313 - 2² = 1395688309 is a prime.

It is not a weakly prime, because it can be changed into another prime (1395688373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697844156 + 697844157.

It is an arithmetic number, because the mean of its divisors is an integer number (697844157).

Almost surely, 2^1395688313 is an apocalyptic number.

It is an amenable number.

1395688313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395688313 is an equidigital number, since it uses as much as digits as its factorization.

1395688313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 1395688313 is about 37358.9120960448. The cubic root of 1395688313 is about 1117.5393238051.

The spelling of 1395688313 in words is "one billion, three hundred ninety-five million, six hundred eighty-eight thousand, three hundred thirteen".