1389536362447 has 2 divisors, whose sum is σ = 1389536362448. Its totient is φ = 1389536362446.

The previous prime is 1389536362397. The next prime is 1389536362531. The reversal of 1389536362447 is 7442636359831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389536362447 - 2²³ = 1389527973839 is a prime.

It is a super-2 number, since 2×1389536362447² (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 (1389536362847) 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, 694768181223 + 694768181224.

It is an arithmetic number, because the mean of its divisors is an integer number (694768181224).

Almost surely, 2^{1389536362447} is an apocalyptic number.

1389536362447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389536362447 is an equidigital number, since it uses as much as digits as its factorization.

1389536362447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 61.

The spelling of 1389536362447 in words is "one trillion, three hundred eighty-nine billion, five hundred thirty-six million, three hundred sixty-two thousand, four hundred forty-seven".