2685815853 has 16 divisors (see below), whose sum is σ = 4093439616. Its totient is φ = 1534464000.

The previous prime is 2685815843. The next prime is 2685815857. The reversal of 2685815853 is 3585185862.

It is not a de Polignac number, because 2685815853 - 2⁴ = 2685815837 is a prime.

It is a super-2 number, since 2×2685815853² = 14427213592452235218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2685815796 and 2685815805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685815857) 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, 159853 + ... + 175853.

It is an arithmetic number, because the mean of its divisors is an integer number (255839976).

Almost surely, 2^2685815853 is an apocalyptic number.

It is an amenable number.

2685815853 is a deficient number, since it is larger than the sum of its proper divisors (1407623763).

2685815853 is a wasteful number, since it uses less digits than its factorization.

2685815853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24004.

The product of its digits is 2304000, while the sum is 51.

The square root of 2685815853 is about 51824.8574817143. The cubic root of 2685815853 is about 1390.0339610080.

The spelling of 2685815853 in words is "two billion, six hundred eighty-five million, eight hundred fifteen thousand, eight hundred fifty-three".