2819650643 has 2 divisors, whose sum is σ = 2819650644. Its totient is φ = 2819650642.

The previous prime is 2819650609. The next prime is 2819650697. The reversal of 2819650643 is 3460569182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2819650643 - 2⁸ = 2819650387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2819650594 and 2819650603.

It is not a weakly prime, because it can be changed into another prime (2819650543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409825321 + 1409825322.

It is an arithmetic number, because the mean of its divisors is an integer number (1409825322).

Almost surely, 2^2819650643 is an apocalyptic number.

2819650643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2819650643 is an equidigital number, since it uses as much as digits as its factorization.

2819650643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2819650643 is about 53100.3827010691. The cubic root of 2819650643 is about 1412.7492998559.

The spelling of 2819650643 in words is "two billion, eight hundred nineteen million, six hundred fifty thousand, six hundred forty-three".