2178266798 has 16 divisors (see below), whose sum is σ = 3301781616. Its totient is φ = 1077686400.

The previous prime is 2178266777. The next prime is 2178266807. The reversal of 2178266798 is 8976628712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572390 + ... + 576182.

It is an arithmetic number, because the mean of its divisors is an integer number (206361351).

Almost surely, 2^2178266798 is an apocalyptic number.

2178266798 is a deficient number, since it is larger than the sum of its proper divisors (1123514818).

2178266798 is a wasteful number, since it uses less digits than its factorization.

2178266798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6739.

The product of its digits is 4064256, while the sum is 56.

The square root of 2178266798 is about 46671.9058749479. The cubic root of 2178266798 is about 1296.2945365059.

The spelling of 2178266798 in words is "two billion, one hundred seventy-eight million, two hundred sixty-six thousand, seven hundred ninety-eight".