2022643779 has 16 divisors (see below), whose sum is σ = 2911071744. Its totient is φ = 1241805600.

The previous prime is 2022643769. The next prime is 2022643793. The reversal of 2022643779 is 9773462202.

It is not a de Polignac number, because 2022643779 - 2⁵ = 2022643747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2022643779.

It is not an unprimeable number, because it can be changed into a prime (2022643729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43357 + ... + 76974.

It is an arithmetic number, because the mean of its divisors is an integer number (181941984).

Almost surely, 2^2022643779 is an apocalyptic number.

2022643779 is a deficient number, since it is larger than the sum of its proper divisors (888427965).

2022643779 is a wasteful number, since it uses less digits than its factorization.

2022643779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120778.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 2022643779 is about 44973.8121466260. The cubic root of 2022643779 is about 1264.6581127559.

The spelling of 2022643779 in words is "two billion, twenty-two million, six hundred forty-three thousand, seven hundred seventy-nine".