2211718980 has 24 divisors (see below), whose sum is σ = 6192813312. Its totient is φ = 589791712.

The previous prime is 2211718979. The next prime is 2211718987. The reversal of 2211718980 is 898171122.

It is not an unprimeable number, because it can be changed into a prime (2211718987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18430932 + ... + 18431051.

It is an arithmetic number, because the mean of its divisors is an integer number (258033888).

Almost surely, 2^2211718980 is an apocalyptic number.

2211718980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211718980 is an abundant number, since it is smaller than the sum of its proper divisors (3981094332).

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

2211718980 is a wasteful number, since it uses less digits than its factorization.

2211718980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36861995 (or 36861993 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 2211718980 is about 47028.9164238344. The cubic root of 2211718980 is about 1302.8966925967.

The spelling of 2211718980 in words is "two billion, two hundred eleven million, seven hundred eighteen thousand, nine hundred eighty".