2203779678 has 16 divisors (see below), whose sum is σ = 4473344640. Its totient is φ = 723629016.

The previous prime is 2203779673. The next prime is 2203779679. The reversal of 2203779678 is 8769773022.

It is a self number, because there is not a number n which added to its sum of digits gives 2203779678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203779673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740618 + ... + 2741421.

It is an arithmetic number, because the mean of its divisors is an integer number (279584040).

Almost surely, 2^2203779678 is an apocalyptic number.

2203779678 is an abundant number, since it is smaller than the sum of its proper divisors (2269564962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2203779678 is a wasteful number, since it uses less digits than its factorization.

2203779678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5482111.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The square root of 2203779678 is about 46944.4318103862. The cubic root of 2203779678 is about 1301.3358414544.

The spelling of 2203779678 in words is "two billion, two hundred three million, seven hundred seventy-nine thousand, six hundred seventy-eight".