1382638881269 has 2 divisors, whose sum is σ = 1382638881270. Its totient is φ = 1382638881268.

The previous prime is 1382638881257. The next prime is 1382638881301. The reversal of 1382638881269 is 9621888362831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292173280644 + 90465600625 = 1136738^2 + 300775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1382638881269 is a prime.

It is a super-2 number, since 2×1382638881269² (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 (1382638886269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691319440634 + 691319440635.

It is an arithmetic number, because the mean of its divisors is an integer number (691319440635).

Almost surely, 2^{1382638881269} is an apocalyptic number.

It is an amenable number.

1382638881269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382638881269 is an equidigital number, since it uses as much as digits as its factorization.

1382638881269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47775744, while the sum is 65.

The spelling of 1382638881269 in words is "one trillion, three hundred eighty-two billion, six hundred thirty-eight million, eight hundred eighty-one thousand, two hundred sixty-nine".