2144679867 has 18 divisors (see below), whose sum is σ = 3405099516. Its totient is φ = 1299805320.

The previous prime is 2144679847. The next prime is 2144679871. The reversal of 2144679867 is 7689764412.

It is not a de Polignac number, because 2144679867 - 2¹⁶ = 2144614331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2144679847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 983613 + ... + 985790.

Almost surely, 2^2144679867 is an apocalyptic number.

2144679867 is a deficient number, since it is larger than the sum of its proper divisors (1260419649).

2144679867 is a wasteful number, since it uses less digits than its factorization.

2144679867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969431 (or 1969417 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 2144679867 is about 46310.6884746923. The cubic root of 2144679867 is about 1289.5974280145.

The spelling of 2144679867 in words is "two billion, one hundred forty-four million, six hundred seventy-nine thousand, eight hundred sixty-seven".