2127979643 has 2 divisors, whose sum is σ = 2127979644. Its totient is φ = 2127979642.

The previous prime is 2127979549. The next prime is 2127979703. The reversal of 2127979643 is 3469797212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2127979643 - 2²⁴ = 2111202427 is a prime.

It is a super-2 number, since 2×2127979643² = 9056594722044814898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2127979591 and 2127979600.

It is not a weakly prime, because it can be changed into another prime (2127979543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063989821 + 1063989822.

It is an arithmetic number, because the mean of its divisors is an integer number (1063989822).

Almost surely, 2^2127979643 is an apocalyptic number.

2127979643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2127979643 is an equidigital number, since it uses as much as digits as its factorization.

2127979643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 2127979643 is about 46130.0297311849. The cubic root of 2127979643 is about 1286.2414167434.

The spelling of 2127979643 in words is "two billion, one hundred twenty-seven million, nine hundred seventy-nine thousand, six hundred forty-three".