2685851481 has 8 divisors (see below), whose sum is σ = 3602579904. Its totient is φ = 1779845360.

The previous prime is 2685851477. The next prime is 2685851491. The reversal of 2685851481 is 1841585862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2685851481 - 2² = 2685851477 is a prime.

It is a super-2 number, since 2×2685851481² = 14427596355979786722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2685851481.

It is not an unprimeable number, because it can be changed into a prime (2685851431) 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, 2679990 + ... + 2680991.

It is an arithmetic number, because the mean of its divisors is an integer number (450322488).

Almost surely, 2^2685851481 is an apocalyptic number.

It is an amenable number.

2685851481 is a deficient number, since it is larger than the sum of its proper divisors (916728423).

2685851481 is a wasteful number, since it uses less digits than its factorization.

2685851481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361151.

The product of its digits is 614400, while the sum is 48.

The square root of 2685851481 is about 51825.2012152389. The cubic root of 2685851481 is about 1390.0401073602.

The spelling of 2685851481 in words is "two billion, six hundred eighty-five million, eight hundred fifty-one thousand, four hundred eighty-one".