18582199679 has 2 divisors, whose sum is σ = 18582199680. Its totient is φ = 18582199678.

The previous prime is 18582199651. The next prime is 18582199723. The reversal of 18582199679 is 97699128581.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18582199679 - 2⁸ = 18582199423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18582196679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9291099839 + 9291099840.

It is an arithmetic number, because the mean of its divisors is an integer number (9291099840).

Almost surely, 2^18582199679 is an apocalyptic number.

18582199679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18582199679 is an equidigital number, since it uses as much as digits as its factorization.

18582199679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 65.

The spelling of 18582199679 in words is "eighteen billion, five hundred eighty-two million, one hundred ninety-nine thousand, six hundred seventy-nine".