1387376663 has 2 divisors, whose sum is σ = 1387376664. Its totient is φ = 1387376662.

The previous prime is 1387376651. The next prime is 1387376677. The reversal of 1387376663 is 3666737831.

It is a weak prime.

It is an emirp because it is prime and its reverse (3666737831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1387376663 - 2¹⁶ = 1387311127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387376603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693688331 + 693688332.

It is an arithmetic number, because the mean of its divisors is an integer number (693688332).

Almost surely, 2^1387376663 is an apocalyptic number.

1387376663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387376663 is an equidigital number, since it uses as much as digits as its factorization.

1387376663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 50.

The square root of 1387376663 is about 37247.5054600976. The cubic root of 1387376663 is about 1115.3165028819.

The spelling of 1387376663 in words is "one billion, three hundred eighty-seven million, three hundred seventy-six thousand, six hundred sixty-three".