2164143815 has 16 divisors (see below), whose sum is σ = 2637992448. Its totient is φ = 1704171936.

The previous prime is 2164143797. The next prime is 2164143851. The reversal of 2164143815 is 5183414612.

It is a cyclic number.

It is not a de Polignac number, because 2164143815 - 2¹⁰ = 2164142791 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 73424 + ... + 98586.

It is an arithmetic number, because the mean of its divisors is an integer number (164874528).

Almost surely, 2^2164143815 is an apocalyptic number.

2164143815 is a deficient number, since it is larger than the sum of its proper divisors (473848633).

2164143815 is a wasteful number, since it uses less digits than its factorization.

2164143815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25438.

The product of its digits is 23040, while the sum is 35.

The square root of 2164143815 is about 46520.3591452173. The cubic root of 2164143815 is about 1293.4869136372.

It can be divided in two parts, 21641 and 43815, that added together give a palindrome (65456).

The spelling of 2164143815 in words is "two billion, one hundred sixty-four million, one hundred forty-three thousand, eight hundred fifteen".