8950387643 has 2 divisors, whose sum is σ = 8950387644. Its totient is φ = 8950387642.

The previous prime is 8950387637. The next prime is 8950387651. The reversal of 8950387643 is 3467830598.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8950387643 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8950387343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4475193821 + 4475193822.

It is an arithmetic number, because the mean of its divisors is an integer number (4475193822).

Almost surely, 2^8950387643 is an apocalyptic number.

8950387643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8950387643 is an equidigital number, since it uses as much as digits as its factorization.

8950387643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The square root of 8950387643 is about 94606.4883768550. The cubic root of 8950387643 is about 2076.2546352885.

The spelling of 8950387643 in words is "eight billion, nine hundred fifty million, three hundred eighty-seven thousand, six hundred forty-three".