1386351797 has 2 divisors, whose sum is σ = 1386351798. Its totient is φ = 1386351796.

The previous prime is 1386351781. The next prime is 1386351829. The reversal of 1386351797 is 7971536831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825183076 + 561168721 = 28726^2 + 23689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386351797 - 2⁴ = 1386351781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386351767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693175898 + 693175899.

It is an arithmetic number, because the mean of its divisors is an integer number (693175899).

Almost surely, 2^1386351797 is an apocalyptic number.

It is an amenable number.

1386351797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386351797 is an equidigital number, since it uses as much as digits as its factorization.

1386351797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The square root of 1386351797 is about 37233.7454065529. The cubic root of 1386351797 is about 1115.0418042200.

The spelling of 1386351797 in words is "one billion, three hundred eighty-six million, three hundred fifty-one thousand, seven hundred ninety-seven".