2682978861 has 8 divisors (see below), whose sum is σ = 3590506624. Its totient is φ = 1782051840.

The previous prime is 2682978841. The next prime is 2682978889. The reversal of 2682978861 is 1688792862.

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

It is not a de Polignac number, because 2682978861 - 2⁵ = 2682978829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2682978841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649236 + ... + 1650861.

It is an arithmetic number, because the mean of its divisors is an integer number (448813328).

Almost surely, 2^2682978861 is an apocalyptic number.

It is an amenable number.

2682978861 is a deficient number, since it is larger than the sum of its proper divisors (907527763).

2682978861 is a wasteful number, since it uses less digits than its factorization.

2682978861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300371.

The product of its digits is 4644864, while the sum is 57.

The square root of 2682978861 is about 51797.4792919501. The cubic root of 2682978861 is about 1389.5443637120.

The spelling of 2682978861 in words is "two billion, six hundred eighty-two million, nine hundred seventy-eight thousand, eight hundred sixty-one".