2680641138 has 24 divisors (see below), whose sum is σ = 6236594352. Its totient is φ = 765897384.

The previous prime is 2680641133. The next prime is 2680641149. The reversal of 2680641138 is 8311460862.

It is a junction number, because it is equal to n+sod(n) for n = 2680641096 and 2680641105.

It is not an unprimeable number, because it can be changed into a prime (2680641133) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4558620 + ... + 4559207.

It is an arithmetic number, because the mean of its divisors is an integer number (259858098).

Almost surely, 2^2680641138 is an apocalyptic number.

2680641138 is an abundant number, since it is smaller than the sum of its proper divisors (3555953214).

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

2680641138 is a wasteful number, since it uses less digits than its factorization.

2680641138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117846 (or 9117839 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 2680641138 is about 51774.9083823429. The cubic root of 2680641138 is about 1389.1406689265.

The spelling of 2680641138 in words is "two billion, six hundred eighty million, six hundred forty-one thousand, one hundred thirty-eight".