1389536362405 has 16 divisors (see below), whose sum is σ = 1672846441200. Its totient is φ = 1108027820032.

The previous prime is 1389536362397. The next prime is 1389536362447. The reversal of 1389536362405 is 5042636359831.

It can be written as a sum of positive squares in 8 ways, for example, as 7001316 + 1389529361089 = 2646^2 + 1178783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389536362405 - 2³ = 1389536362397 is a prime.

It is a super-2 number, since 2×1389536362405² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23030037 + ... + 23090293.

It is an arithmetic number, because the mean of its divisors is an integer number (104552902575).

Almost surely, 2^{1389536362405} is an apocalyptic number.

It is an amenable number.

1389536362405 is a deficient number, since it is larger than the sum of its proper divisors (283310078795).

1389536362405 is a wasteful number, since it uses less digits than its factorization.

1389536362405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75128.

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 1389536362405 in words is "one trillion, three hundred eighty-nine billion, five hundred thirty-six million, three hundred sixty-two thousand, four hundred five".