4046640643 has 2 divisors, whose sum is σ = 4046640644. Its totient is φ = 4046640642.

The previous prime is 4046640641. The next prime is 4046640671. The reversal of 4046640643 is 3460466404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4046640643 - 2¹ = 4046640641 is a prime.

Together with 4046640641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4046640641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023320321 + 2023320322.

It is an arithmetic number, because the mean of its divisors is an integer number (2023320322).

Almost surely, 2^4046640643 is an apocalyptic number.

4046640643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4046640643 is an equidigital number, since it uses as much as digits as its factorization.

4046640643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 37.

The square root of 4046640643 is about 63613.2112300582. The cubic root of 4046640643 is about 1593.5470097015.

The spelling of 4046640643 in words is "four billion, forty-six million, six hundred forty thousand, six hundred forty-three".