2812393838 has 12 divisors (see below), whose sum is σ = 4273003440. Its totient is φ = 1388067876.

The previous prime is 2812393819. The next prime is 2812393841. The reversal of 2812393838 is 8383932182.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2812393792 and 2812393801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664493 + ... + 668711.

It is an arithmetic number, because the mean of its divisors is an integer number (356083620).

Almost surely, 2^2812393838 is an apocalyptic number.

2812393838 is a deficient number, since it is larger than the sum of its proper divisors (1460609602).

2812393838 is an frugal number, since it uses more digits than its factorization.

2812393838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519 (or 4300 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 2812393838 is about 53032.0076746110. The cubic root of 2812393838 is about 1411.5362826951.

The spelling of 2812393838 in words is "two billion, eight hundred twelve million, three hundred ninety-three thousand, eight hundred thirty-eight".