1856085091764 has 24 divisors (see below), whose sum is σ = 4331050815168. Its totient is φ = 618668516160.

The previous prime is 1856085091753. The next prime is 1856085091769. The reversal of 1856085091764 is 4671905806581.

It is a junction number, because it is equal to n+sod(n) for n = 1856085091698 and 1856085091707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1856085091769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3021592 + ... + 3583599.

It is an arithmetic number, because the mean of its divisors is an integer number (180460450632).

Almost surely, 2^{1856085091764} is an apocalyptic number.

It is an amenable number.

1856085091764 is an abundant number, since it is smaller than the sum of its proper divisors (2474965723404).

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

1856085091764 is a wasteful number, since it uses less digits than its factorization.

1856085091764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628615 (or 6628613 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 1856085091764 in words is "one trillion, eight hundred fifty-six billion, eighty-five million, ninety-one thousand, seven hundred sixty-four".