2080221978 has 16 divisors (see below), whose sum is σ = 4161288096. Its totient is φ = 693266640.

The previous prime is 2080221977. The next prime is 2080221991. The reversal of 2080221978 is 8791220802.

It is not an unprimeable number, because it can be changed into a prime (2080221977) 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, 508 + ... + 64503.

It is an arithmetic number, because the mean of its divisors is an integer number (260080506).

Almost surely, 2^2080221978 is an apocalyptic number.

2080221978 is an abundant number, since it is smaller than the sum of its proper divisors (2081066118).

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

2080221978 is a wasteful number, since it uses less digits than its factorization.

2080221978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70349.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 2080221978 is about 45609.4505338532. The cubic root of 2080221978 is about 1276.5462676291.

The spelling of 2080221978 in words is "two billion, eighty million, two hundred twenty-one thousand, nine hundred seventy-eight".