2143692647 has 2 divisors, whose sum is σ = 2143692648. Its totient is φ = 2143692646.

The previous prime is 2143692623. The next prime is 2143692653. The reversal of 2143692647 is 7462963412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143692647 - 2¹² = 2143688551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143692598 and 2143692607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143692247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071846323 + 1071846324.

It is an arithmetic number, because the mean of its divisors is an integer number (1071846324).

Almost surely, 2^2143692647 is an apocalyptic number.

2143692647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143692647 is an equidigital number, since it uses as much as digits as its factorization.

2143692647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 2143692647 is about 46300.0285853044. The cubic root of 2143692647 is about 1289.3995256320.

The spelling of 2143692647 in words is "two billion, one hundred forty-three million, six hundred ninety-two thousand, six hundred forty-seven".