2144893979 has 2 divisors, whose sum is σ = 2144893980. Its totient is φ = 2144893978.

The previous prime is 2144893951. The next prime is 2144894009. The reversal of 2144893979 is 9793984412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144893979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2144893909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072446989 + 1072446990.

It is an arithmetic number, because the mean of its divisors is an integer number (1072446990).

Almost surely, 2^2144893979 is an apocalyptic number.

2144893979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144893979 is an equidigital number, since it uses as much as digits as its factorization.

2144893979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 2144893979 is about 46313.0001079610. Note that the first 3 decimals coincide. The cubic root of 2144893979 is about 1289.6403418157.

The spelling of 2144893979 in words is "two billion, one hundred forty-four million, eight hundred ninety-three thousand, nine hundred seventy-nine".