1389519340636 has 36 divisors (see below), whose sum is σ = 2833688867688. Its totient is φ = 594450500448.

The previous prime is 1389519340633. The next prime is 1389519340637. The reversal of 1389519340636 is 6360439159831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389519340633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6185731 + ... + 6406426.

It is an arithmetic number, because the mean of its divisors is an integer number (78713579658).

Almost surely, 2^{1389519340636} is an apocalyptic number.

It is an amenable number.

1389519340636 is an abundant number, since it is smaller than the sum of its proper divisors (1444169527052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389519340636 is a wasteful number, since it uses less digits than its factorization.

1389519340636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12592738 (or 12592729 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 1389519340636 in words is "one trillion, three hundred eighty-nine billion, five hundred nineteen million, three hundred forty thousand, six hundred thirty-six".