2808581138 has 8 divisors (see below), whose sum is σ = 4595860080. Its totient is φ = 1276627780.

The previous prime is 2808581137. The next prime is 2808581161. The reversal of 2808581138 is 8311858082.

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

It is not an unprimeable number, because it can be changed into a prime (2808581137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63831368 + ... + 63831411.

It is an arithmetic number, because the mean of its divisors is an integer number (574482510).

Almost surely, 2^2808581138 is an apocalyptic number.

2808581138 is a deficient number, since it is larger than the sum of its proper divisors (1787278942).

2808581138 is a wasteful number, since it uses less digits than its factorization.

2808581138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127662792.

The product of its (nonzero) digits is 122880, while the sum is 44.

The square root of 2808581138 is about 52996.0483243798. The cubic root of 2808581138 is about 1410.8981314133.

The spelling of 2808581138 in words is "two billion, eight hundred eight million, five hundred eighty-one thousand, one hundred thirty-eight".