8124218591 has 2 divisors, whose sum is σ = 8124218592. Its totient is φ = 8124218590.

The previous prime is 8124218551. The next prime is 8124218629. The reversal of 8124218591 is 1958124218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8124218591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8124218551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062109295 + 4062109296.

It is an arithmetic number, because the mean of its divisors is an integer number (4062109296).

Almost surely, 2^8124218591 is an apocalyptic number.

8124218591 is a deficient number, since it is larger than the sum of its proper divisors (1).

8124218591 is an equidigital number, since it uses as much as digits as its factorization.

8124218591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 41.

The square root of 8124218591 is about 90134.4473051230. The cubic root of 8124218591 is about 2010.2984294069.

The spelling of 8124218591 in words is "eight billion, one hundred twenty-four million, two hundred eighteen thousand, five hundred ninety-one".