1386381277 has 2 divisors, whose sum is σ = 1386381278. Its totient is φ = 1386381276.

The previous prime is 1386381259. The next prime is 1386381299. The reversal of 1386381277 is 7721836831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1029511396 + 356869881 = 32086^2 + 18891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386381277 - 2¹¹ = 1386379229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386381677) 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, 693190638 + 693190639.

It is an arithmetic number, because the mean of its divisors is an integer number (693190639).

Almost surely, 2^1386381277 is an apocalyptic number.

It is an amenable number.

1386381277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386381277 is an equidigital number, since it uses as much as digits as its factorization.

1386381277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 1386381277 is about 37234.1412818934. The cubic root of 1386381277 is about 1115.0497077453.

The spelling of 1386381277 in words is "one billion, three hundred eighty-six million, three hundred eighty-one thousand, two hundred seventy-seven".