2146563439 has 2 divisors, whose sum is σ = 2146563440. Its totient is φ = 2146563438.

The previous prime is 2146563427. The next prime is 2146563457. The reversal of 2146563439 is 9343656412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2146563439 - 2²⁹ = 1609692527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2146563395 and 2146563404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2146563469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073281719 + 1073281720.

It is an arithmetic number, because the mean of its divisors is an integer number (1073281720).

Almost surely, 2^2146563439 is an apocalyptic number.

2146563439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146563439 is an equidigital number, since it uses as much as digits as its factorization.

2146563439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 43.

The square root of 2146563439 is about 46331.0202672033. The cubic root of 2146563439 is about 1289.9748485772.

The spelling of 2146563439 in words is "two billion, one hundred forty-six million, five hundred sixty-three thousand, four hundred thirty-nine".