2143875569 has 4 divisors (see below), whose sum is σ = 2338773360. Its totient is φ = 1948977780.

The previous prime is 2143875557. The next prime is 2143875577. The reversal of 2143875569 is 9655783412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143875569 - 2¹² = 2143871473 is a prime.

It is a super-2 number, since 2×2143875569² = 9192404910710147522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143875589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97448879 + ... + 97448900.

It is an arithmetic number, because the mean of its divisors is an integer number (584693340).

Almost surely, 2^2143875569 is an apocalyptic number.

It is an amenable number.

2143875569 is a deficient number, since it is larger than the sum of its proper divisors (194897791).

2143875569 is a wasteful number, since it uses less digits than its factorization.

2143875569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194897790.

The product of its digits is 1814400, while the sum is 50.

The square root of 2143875569 is about 46302.0039415142. The cubic root of 2143875569 is about 1289.4361995510.

It can be divided in two parts, 214 and 3875569, that added together give a palindrome (3875783).

The spelling of 2143875569 in words is "two billion, one hundred forty-three million, eight hundred seventy-five thousand, five hundred sixty-nine".