2665084138 has 16 divisors (see below), whose sum is σ = 4018507560. Its totient is φ = 1325592000.

The previous prime is 2665084133. The next prime is 2665084139. The reversal of 2665084138 is 8314805662.

It can be written as a sum of positive squares in 4 ways, for example, as 2641240449 + 23843689 = 51393^2 + 4883^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2665084094 and 2665084103.

It is not an unprimeable number, because it can be changed into a prime (2665084133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869128 + ... + 872188.

Almost surely, 2^2665084138 is an apocalyptic number.

2665084138 is a deficient number, since it is larger than the sum of its proper divisors (1353423422).

2665084138 is a wasteful number, since it uses less digits than its factorization.

2665084138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 2665084138 is about 51624.4529075127. The cubic root of 2665084138 is about 1386.4481783960.

The spelling of 2665084138 in words is "two billion, six hundred sixty-five million, eighty-four thousand, one hundred thirty-eight".