1388493853277 has 2 divisors, whose sum is σ = 1388493853278. Its totient is φ = 1388493853276.

The previous prime is 1388493853249. The next prime is 1388493853427. The reversal of 1388493853277 is 7723583948831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1178279856196 + 210213997081 = 1085486^2 + 458491^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388493853277 - 2¹⁰ = 1388493852253 is a prime.

It is a super-2 number, since 2×1388493853277² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388493853247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694246926638 + 694246926639.

It is an arithmetic number, because the mean of its divisors is an integer number (694246926639).

Almost surely, 2^{1388493853277} is an apocalyptic number.

It is an amenable number.

1388493853277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388493853277 is an equidigital number, since it uses as much as digits as its factorization.

1388493853277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243855360, while the sum is 68.

The spelling of 1388493853277 in words is "one trillion, three hundred eighty-eight billion, four hundred ninety-three million, eight hundred fifty-three thousand, two hundred seventy-seven".