2816539138 has 32 divisors (see below), whose sum is σ = 5089674240. Its totient is φ = 1141938000.

The previous prime is 2816539093. The next prime is 2816539139. The reversal of 2816539138 is 8319356182.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2816539139) 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, 190513 + ... + 204763.

It is an arithmetic number, because the mean of its divisors is an integer number (159052320).

Almost surely, 2^2816539138 is an apocalyptic number.

2816539138 is a deficient number, since it is larger than the sum of its proper divisors (2273135102).

2816539138 is a wasteful number, since it uses less digits than its factorization.

2816539138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15022.

The product of its digits is 311040, while the sum is 46.

The square root of 2816539138 is about 53071.0762845450. The cubic root of 2816539138 is about 1412.2294488788.

The spelling of 2816539138 in words is "two billion, eight hundred sixteen million, five hundred thirty-nine thousand, one hundred thirty-eight".