2681878740 has 96 divisors (see below), whose sum is σ = 7634995200. Its totient is φ = 703248000.

The previous prime is 2681878681. The next prime is 2681878763. The reversal of 2681878740 is 478781862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2551215 + ... + 2552265.

It is an arithmetic number, because the mean of its divisors is an integer number (79531200).

Almost surely, 2^2681878740 is an apocalyptic number.

2681878740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2681878740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3817497600).

2681878740 is an abundant number, since it is smaller than the sum of its proper divisors (4953116460).

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

2681878740 is a wasteful number, since it uses less digits than its factorization.

2681878740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 51.

The square root of 2681878740 is about 51786.8587577968. The cubic root of 2681878740 is about 1389.3544161452.

The spelling of 2681878740 in words is "two billion, six hundred eighty-one million, eight hundred seventy-eight thousand, seven hundred forty".