2681155138 has 16 divisors (see below), whose sum is σ = 4112726400. Its totient is φ = 1310321776.

The previous prime is 2681155111. The next prime is 2681155159. The reversal of 2681155138 is 8315511862.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2681155138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54213 + ... + 91111.

It is an arithmetic number, because the mean of its divisors is an integer number (257045400).

Almost surely, 2^2681155138 is an apocalyptic number.

2681155138 is a deficient number, since it is larger than the sum of its proper divisors (1431571262).

2681155138 is a wasteful number, since it uses less digits than its factorization.

2681155138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37721.

The product of its digits is 57600, while the sum is 40.

The square root of 2681155138 is about 51779.8719388142. The cubic root of 2681155138 is about 1389.2294502584.

The spelling of 2681155138 in words is "two billion, six hundred eighty-one million, one hundred fifty-five thousand, one hundred thirty-eight".