2164434505 has 4 divisors (see below), whose sum is σ = 2597321412. Its totient is φ = 1731547600.

The previous prime is 2164434497. The next prime is 2164434523. The reversal of 2164434505 is 5054344612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 486467136 + 1677967369 = 22056^2 + 40963^2 .

It is not a de Polignac number, because 2164434505 - 2³ = 2164434497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216443446 + ... + 216443455.

It is an arithmetic number, because the mean of its divisors is an integer number (649330353).

Almost surely, 2^2164434505 is an apocalyptic number.

It is an amenable number.

2164434505 is a deficient number, since it is larger than the sum of its proper divisors (432886907).

2164434505 is an equidigital number, since it uses as much as digits as its factorization.

2164434505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432886906.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2164434505 is about 46523.4833713040. The cubic root of 2164434505 is about 1293.5448252040.

The spelling of 2164434505 in words is "two billion, one hundred sixty-four million, four hundred thirty-four thousand, five hundred five".