1387377109637 has 2 divisors, whose sum is σ = 1387377109638. Its totient is φ = 1387377109636.

The previous prime is 1387377109619. The next prime is 1387377109639. The reversal of 1387377109637 is 7369017737831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1332267669121 + 55109440516 = 1154239^2 + 234754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1387377109637 - 2¹⁰ = 1387377108613 is a prime.

It is a super-3 number, since 3×1387377109637³ (a number of 37 digits) contains 333 as substring.

Together with 1387377109639, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1387377109637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387377109639) 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, 693688554818 + 693688554819.

It is an arithmetic number, because the mean of its divisors is an integer number (693688554819).

Almost surely, 2^{1387377109637} is an apocalyptic number.

It is an amenable number.

1387377109637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387377109637 is an equidigital number, since it uses as much as digits as its factorization.

1387377109637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28005264, while the sum is 62.

The spelling of 1387377109637 in words is "one trillion, three hundred eighty-seven billion, three hundred seventy-seven million, one hundred nine thousand, six hundred thirty-seven".