8921640367 has 2 divisors, whose sum is σ = 8921640368. Its totient is φ = 8921640366.

The previous prime is 8921640347. The next prime is 8921640379. The reversal of 8921640367 is 7630461298.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8921640367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8921640317) 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, 4460820183 + 4460820184.

It is an arithmetic number, because the mean of its divisors is an integer number (4460820184).

Almost surely, 2^8921640367 is an apocalyptic number.

8921640367 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921640367 is an equidigital number, since it uses as much as digits as its factorization.

8921640367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 8921640367 is about 94454.4354014146. The cubic root of 8921640367 is about 2074.0293804289.

The spelling of 8921640367 in words is "eight billion, nine hundred twenty-one million, six hundred forty thousand, three hundred sixty-seven".