1386669601 has 2 divisors, whose sum is σ = 1386669602. Its totient is φ = 1386669600.

The previous prime is 1386669589. The next prime is 1386669631. The reversal of 1386669601 is 1069666831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 828576225 + 558093376 = 28785^2 + 23624^2 .

It is an emirp because it is prime and its reverse (1069666831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1386669601 - 2¹¹ = 1386667553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1386669631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693334800 + 693334801.

It is an arithmetic number, because the mean of its divisors is an integer number (693334801).

Almost surely, 2^1386669601 is an apocalyptic number.

It is an amenable number.

1386669601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386669601 is an equidigital number, since it uses as much as digits as its factorization.

1386669601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1386669601 is about 37238.0128497749. The cubic root of 1386669601 is about 1115.1270008903.

The spelling of 1386669601 in words is "one billion, three hundred eighty-six million, six hundred sixty-nine thousand, six hundred one".