2643456419 has 2 divisors, whose sum is σ = 2643456420. Its totient is φ = 2643456418.

The previous prime is 2643456353. The next prime is 2643456443. The reversal of 2643456419 is 9146543462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2643456419 is a prime.

It is a super-2 number, since 2×2643456419² = 13975723678304607122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2643456419.

It is not a weakly prime, because it can be changed into another prime (2643456619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321728209 + 1321728210.

It is an arithmetic number, because the mean of its divisors is an integer number (1321728210).

Almost surely, 2^2643456419 is an apocalyptic number.

2643456419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643456419 is an equidigital number, since it uses as much as digits as its factorization.

2643456419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 2643456419 is about 51414.5545444089. The cubic root of 2643456419 is about 1382.6875475623.

The spelling of 2643456419 in words is "two billion, six hundred forty-three million, four hundred fifty-six thousand, four hundred nineteen".