2681213906 has 32 divisors (see below), whose sum is σ = 4721310720. Its totient is φ = 1118270736.

The previous prime is 2681213903. The next prime is 2681213933. The reversal of 2681213906 is 6093121862.

It is a happy number.

2681213906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2681213906.

It is not an unprimeable number, because it can be changed into a prime (2681213903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60635 + ... + 95073.

It is an arithmetic number, because the mean of its divisors is an integer number (147540960).

Almost surely, 2^2681213906 is an apocalyptic number.

2681213906 is a deficient number, since it is larger than the sum of its proper divisors (2040096814).

2681213906 is a wasteful number, since it uses less digits than its factorization.

2681213906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34598.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2681213906 is about 51780.4394148987. The cubic root of 2681213906 is about 1389.2396003163.

The spelling of 2681213906 in words is "two billion, six hundred eighty-one million, two hundred thirteen thousand, nine hundred six".