18613098587 has 2 divisors, whose sum is σ = 18613098588. Its totient is φ = 18613098586.

The previous prime is 18613098487. The next prime is 18613098593. The reversal of 18613098587 is 78589031681.

It is a strong prime.

It is an emirp because it is prime and its reverse (78589031681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18613098587 - 2¹² = 18613094491 is a prime.

It is not a weakly prime, because it can be changed into another prime (18613098487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9306549293 + 9306549294.

It is an arithmetic number, because the mean of its divisors is an integer number (9306549294).

Almost surely, 2^18613098587 is an apocalyptic number.

18613098587 is a deficient number, since it is larger than the sum of its proper divisors (1).

18613098587 is an equidigital number, since it uses as much as digits as its factorization.

18613098587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 56.

The spelling of 18613098587 in words is "eighteen billion, six hundred thirteen million, ninety-eight thousand, five hundred eighty-seven".