1387975932697 has 2 divisors, whose sum is σ = 1387975932698. Its totient is φ = 1387975932696.

The previous prime is 1387975932661. The next prime is 1387975932703. The reversal of 1387975932697 is 7962395797831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359884831881 + 28091100816 = 1166141^2 + 167604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387975932697 is a prime.

It is a super-2 number, since 2×1387975932697² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1387975932997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693987966348 + 693987966349.

It is an arithmetic number, because the mean of its divisors is an integer number (693987966349).

Almost surely, 2^{1387975932697} is an apocalyptic number.

It is an amenable number.

1387975932697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387975932697 is an equidigital number, since it uses as much as digits as its factorization.

1387975932697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080203040, while the sum is 76.

The spelling of 1387975932697 in words is "one trillion, three hundred eighty-seven billion, nine hundred seventy-five million, nine hundred thirty-two thousand, six hundred ninety-seven".