2681968165 has 8 divisors (see below), whose sum is σ = 3241516320. Its totient is φ = 2130138192.

The previous prime is 2681968141. The next prime is 2681968171. The reversal of 2681968165 is 5618691862.

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 2681968165 - 2¹⁵ = 2681935397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928779 + ... + 1930168.

It is an arithmetic number, because the mean of its divisors is an integer number (405189540).

Almost surely, 2^2681968165 is an apocalyptic number.

It is an amenable number.

2681968165 is a deficient number, since it is larger than the sum of its proper divisors (559548155).

2681968165 is a wasteful number, since it uses less digits than its factorization.

2681968165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859091.

The product of its digits is 1244160, while the sum is 52.

The square root of 2681968165 is about 51787.7221453116. The cubic root of 2681968165 is about 1389.3698582600.

The spelling of 2681968165 in words is "two billion, six hundred eighty-one million, nine hundred sixty-eight thousand, one hundred sixty-five".