1387697863 has 2 divisors, whose sum is σ = 1387697864. Its totient is φ = 1387697862.

The previous prime is 1387697827. The next prime is 1387697869. The reversal of 1387697863 is 3687967831.

It is a strong prime.

It is an emirp because it is prime and its reverse (3687967831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387697863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1387697798 and 1387697807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387697869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693848931 + 693848932.

It is an arithmetic number, because the mean of its divisors is an integer number (693848932).

Almost surely, 2^1387697863 is an apocalyptic number.

1387697863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387697863 is an equidigital number, since it uses as much as digits as its factorization.

1387697863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 58.

The square root of 1387697863 is about 37251.8169087093. The cubic root of 1387697863 is about 1115.4025674736.

The spelling of 1387697863 in words is "one billion, three hundred eighty-seven million, six hundred ninety-seven thousand, eight hundred sixty-three".