2189722458 has 32 divisors (see below), whose sum is σ = 5460088320. Its totient is φ = 568758960.

The previous prime is 2189722441. The next prime is 2189722463. The reversal of 2189722458 is 8542279812.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2369368 + ... + 2370291.

It is an arithmetic number, because the mean of its divisors is an integer number (170627760).

Almost surely, 2^2189722458 is an apocalyptic number.

2189722458 is an abundant number, since it is smaller than the sum of its proper divisors (3270365862).

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

2189722458 is a wasteful number, since it uses less digits than its factorization.

2189722458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739682.

The product of its digits is 645120, while the sum is 48.

The square root of 2189722458 is about 46794.4703784539. The cubic root of 2189722458 is about 1298.5629995233.

The spelling of 2189722458 in words is "two billion, one hundred eighty-nine million, seven hundred twenty-two thousand, four hundred fifty-eight".