2238143279 has 4 divisors (see below), whose sum is σ = 2369798784. Its totient is φ = 2106487776.

The previous prime is 2238143269. The next prime is 2238143287. The reversal of 2238143279 is 9723418322.

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

It is a cyclic number.

It is not a de Polignac number, because 2238143279 - 2⁴ = 2238143263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238143269) 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, 65827727 + ... + 65827760.

It is an arithmetic number, because the mean of its divisors is an integer number (592449696).

Almost surely, 2^2238143279 is an apocalyptic number.

2238143279 is a deficient number, since it is larger than the sum of its proper divisors (131655505).

2238143279 is a wasteful number, since it uses less digits than its factorization.

2238143279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131655504.

The product of its digits is 145152, while the sum is 41.

The square root of 2238143279 is about 47309.0190027229. The cubic root of 2238143279 is about 1308.0649088155.

The spelling of 2238143279 in words is "two billion, two hundred thirty-eight million, one hundred forty-three thousand, two hundred seventy-nine".