2142678719 has 2 divisors, whose sum is σ = 2142678720. Its totient is φ = 2142678718.

The previous prime is 2142678709. The next prime is 2142678721. The reversal of 2142678719 is 9178762412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2142678719 - 2⁸ = 2142678463 is a prime.

It is a super-2 number, since 2×2142678719² = 9182144185710961922, which contains 22 as substring.

Together with 2142678721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142678709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071339359 + 1071339360.

It is an arithmetic number, because the mean of its divisors is an integer number (1071339360).

Almost surely, 2^2142678719 is an apocalyptic number.

2142678719 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142678719 is an equidigital number, since it uses as much as digits as its factorization.

2142678719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 2142678719 is about 46289.0777505882. The cubic root of 2142678719 is about 1289.1962059914.

The spelling of 2142678719 in words is "two billion, one hundred forty-two million, six hundred seventy-eight thousand, seven hundred nineteen".