2681986860 has 72 divisors (see below), whose sum is σ = 9297558816. Its totient is φ = 613025280.

The previous prime is 2681986859. The next prime is 2681986871. The reversal of 2681986860 is 686891862.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2681986797 and 2681986806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1063021 + ... + 1065540.

Almost surely, 2^2681986860 is an apocalyptic number.

2681986860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2681986860 is an abundant number, since it is smaller than the sum of its proper divisors (6615571956).

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

2681986860 is a wasteful number, since it uses less digits than its factorization.

2681986860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128583 (or 2128578 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 2681986860 is about 51787.9026414471. The cubic root of 2681986860 is about 1389.3730865122.

The spelling of 2681986860 in words is "two billion, six hundred eighty-one million, nine hundred eighty-six thousand, eight hundred sixty".