2189735805 has 16 divisors (see below), whose sum is σ = 3528786240. Its totient is φ = 1159456128.

The previous prime is 2189735791. The next prime is 2189735837. The reversal of 2189735805 is 5085379812.

2189735805 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2189735805 - 2¹¹ = 2189733757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523032 + ... + 527201.

It is an arithmetic number, because the mean of its divisors is an integer number (220549140).

Almost surely, 2^2189735805 is an apocalyptic number.

It is an amenable number.

2189735805 is a deficient number, since it is larger than the sum of its proper divisors (1339050435).

2189735805 is a wasteful number, since it uses less digits than its factorization.

2189735805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050380.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 2189735805 is about 46794.6129912408. The cubic root of 2189735805 is about 1298.5656378919.

The spelling of 2189735805 in words is "two billion, one hundred eighty-nine million, seven hundred thirty-five thousand, eight hundred five".