2187044805 has 32 divisors (see below), whose sum is σ = 3822059520. Its totient is φ = 1059087680.

The previous prime is 2187044791. The next prime is 2187044819. The reversal of 2187044805 is 5084407812.

It is a happy number.

2187044805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2187044791) and next prime (2187044819).

It is not a de Polignac number, because 2187044805 - 2⁴ = 2187044789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134716 + ... + 150074.

It is an arithmetic number, because the mean of its divisors is an integer number (119439360).

Almost surely, 2^2187044805 is an apocalyptic number.

It is an amenable number.

2187044805 is a deficient number, since it is larger than the sum of its proper divisors (1635014715).

2187044805 is a wasteful number, since it uses less digits than its factorization.

2187044805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16241.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 2187044805 is about 46765.8508422545. The cubic root of 2187044805 is about 1298.0334774126.

The spelling of 2187044805 in words is "two billion, one hundred eighty-seven million, forty-four thousand, eight hundred five".