2808583138 has 8 divisors (see below), whose sum is σ = 4218886620. Its totient is φ = 1402287600.

The previous prime is 2808583111. The next prime is 2808583147. The reversal of 2808583138 is 8313858082.

It can be written as a sum of positive squares in 2 ways, for example, as 2530794249 + 277788889 = 50307^2 + 16667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000233 + ... + 1003036.

Almost surely, 2^2808583138 is an apocalyptic number.

2808583138 is a deficient number, since it is larger than the sum of its proper divisors (1410303482).

2808583138 is a wasteful number, since it uses less digits than its factorization.

2808583138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003972.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 2808583138 is about 52996.0671937079. The cubic root of 2808583138 is about 1410.8984663149.

The spelling of 2808583138 in words is "two billion, eight hundred eight million, five hundred eighty-three thousand, one hundred thirty-eight".