1386349807 has 2 divisors, whose sum is σ = 1386349808. Its totient is φ = 1386349806.

The previous prime is 1386349777. The next prime is 1386349819. The reversal of 1386349807 is 7089436831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1386349807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386349897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693174903 + 693174904.

It is an arithmetic number, because the mean of its divisors is an integer number (693174904).

Almost surely, 2^1386349807 is an apocalyptic number.

1386349807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386349807 is an equidigital number, since it uses as much as digits as its factorization.

1386349807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 1386349807 is about 37233.7186834729. The cubic root of 1386349807 is about 1115.0412707012.

The spelling of 1386349807 in words is "one billion, three hundred eighty-six million, three hundred forty-nine thousand, eight hundred seven".