1885785489489 has 32 divisors (see below), whose sum is σ = 2747009510784. Its totient is φ = 1141214330880.

The previous prime is 1885785489449. The next prime is 1885785489491. The reversal of 1885785489489 is 9849845875881.

It is not a de Polignac number, because 1885785489489 - 2¹² = 1885785485393 is a prime.

It is a super-2 number, since 2×1885785489489² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1885785489449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85114437 + ... + 85136589.

It is an arithmetic number, because the mean of its divisors is an integer number (85844047212).

Almost surely, 2^{1885785489489} is an apocalyptic number.

It is an amenable number.

1885785489489 is a deficient number, since it is larger than the sum of its proper divisors (861224021295).

1885785489489 is a wasteful number, since it uses less digits than its factorization.

1885785489489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25857.

The product of its digits is 7431782400, while the sum is 84.

The spelling of 1885785489489 in words is "one trillion, eight hundred eighty-five billion, seven hundred eighty-five million, four hundred eighty-nine thousand, four hundred eighty-nine".