8945958643 has 2 divisors, whose sum is σ = 8945958644. Its totient is φ = 8945958642.

The previous prime is 8945958587. The next prime is 8945958673. The reversal of 8945958643 is 3468595498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8945958643 - 2³³ = 356024051 is a prime.

It is not a weakly prime, because it can be changed into another prime (8945958673) 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, 4472979321 + 4472979322.

It is an arithmetic number, because the mean of its divisors is an integer number (4472979322).

Almost surely, 2^8945958643 is an apocalyptic number.

8945958643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945958643 is an equidigital number, since it uses as much as digits as its factorization.

8945958643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37324800, while the sum is 61.

The square root of 8945958643 is about 94583.0779949564. The cubic root of 8945958643 is about 2075.9121082619.

The spelling of 8945958643 in words is "eight billion, nine hundred forty-five million, nine hundred fifty-eight thousand, six hundred forty-three".