2179438065 has 24 divisors (see below), whose sum is σ = 4317363648. Its totient is φ = 996314400.

The previous prime is 2179438057. The next prime is 2179438087. The reversal of 2179438065 is 5608349712.

2179438065 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2179438065 - 2³ = 2179438057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

2179438065 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2179438065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3459111 + ... + 3459740.

It is an arithmetic number, because the mean of its divisors is an integer number (179890152).

It is a 1-persistent number, because it is pandigital, but 2⋅2179438065 = 4358876130 is not.

Almost surely, 2^2179438065 is an apocalyptic number.

It is an amenable number.

2179438065 is a deficient number, since it is larger than the sum of its proper divisors (2137925583).

2179438065 is a wasteful number, since it uses less digits than its factorization.

2179438065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918869 (or 6918866 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2179438065 is about 46684.4520691847. The cubic root of 2179438065 is about 1296.5268366327.

The spelling of 2179438065 in words is "two billion, one hundred seventy-nine million, four hundred thirty-eight thousand, sixty-five".