1285089139389 has 16 divisors (see below), whose sum is σ = 1950491026944. Its totient is φ = 744979210800.

The previous prime is 1285089139363. The next prime is 1285089139403. The reversal of 1285089139389 is 9839319805821.

It is not a de Polignac number, because 1285089139389 - 2¹⁹ = 1285088615101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285089139339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846566527 + ... + 846568044.

It is an arithmetic number, because the mean of its divisors is an integer number (121905689184).

Almost surely, 2^{1285089139389} is an apocalyptic number.

It is an amenable number.

1285089139389 is a deficient number, since it is larger than the sum of its proper divisors (665401887555).

1285089139389 is a wasteful number, since it uses less digits than its factorization.

1285089139389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693134608.

The product of its (nonzero) digits is 33592320, while the sum is 66.

The spelling of 1285089139389 in words is "one trillion, two hundred eighty-five billion, eighty-nine million, one hundred thirty-nine thousand, three hundred eighty-nine".