2809268378 has 16 divisors (see below), whose sum is σ = 4824705984. Its totient is φ = 1201767840.

The previous prime is 2809268359. The next prime is 2809268383. The reversal of 2809268378 is 8738629082.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175763 + ... + 191078.

It is an arithmetic number, because the mean of its divisors is an integer number (301544124).

Almost surely, 2^2809268378 is an apocalyptic number.

2809268378 is a deficient number, since it is larger than the sum of its proper divisors (2015437606).

2809268378 is a wasteful number, since it uses less digits than its factorization.

2809268378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367397.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 2809268378 is about 53002.5318074524. The cubic root of 2809268378 is about 1411.0132009695.

The spelling of 2809268378 in words is "two billion, eight hundred nine million, two hundred sixty-eight thousand, three hundred seventy-eight".