2144862669 has 4 divisors (see below), whose sum is σ = 2859816896. Its totient is φ = 1429908444.

The previous prime is 2144862659. The next prime is 2144862679. The reversal of 2144862669 is 9662684412.

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 an interprime number because it is at equal distance from previous prime (2144862659) and next prime (2144862679).

It is not a de Polignac number, because 2144862669 - 2⁵ = 2144862637 is a prime.

It is a super-2 number, since 2×2144862669² = 9200871737739607122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144862619) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 357477109 + ... + 357477114.

It is an arithmetic number, because the mean of its divisors is an integer number (714954224).

Almost surely, 2^2144862669 is an apocalyptic number.

It is an amenable number.

2144862669 is a deficient number, since it is larger than the sum of its proper divisors (714954227).

2144862669 is an equidigital number, since it uses as much as digits as its factorization.

2144862669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714954226.

The product of its digits is 995328, while the sum is 48.

The square root of 2144862669 is about 46312.6620806880. The cubic root of 2144862669 is about 1289.6340666282.

The spelling of 2144862669 in words is "two billion, one hundred forty-four million, eight hundred sixty-two thousand, six hundred sixty-nine".