18850585601 has 2 divisors, whose sum is σ = 18850585602. Its totient is φ = 18850585600.

The previous prime is 18850585549. The next prime is 18850585603. The reversal of 18850585601 is 10658505881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14544601201 + 4305984400 = 120601^2 + 65620^2 .

It is a cyclic number.

It is not a de Polignac number, because 18850585601 - 2¹⁴ = 18850569217 is a prime.

Together with 18850585603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18850585603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9425292800 + 9425292801.

It is an arithmetic number, because the mean of its divisors is an integer number (9425292801).

Almost surely, 2^18850585601 is an apocalyptic number.

It is an amenable number.

18850585601 is a deficient number, since it is larger than the sum of its proper divisors (1).

18850585601 is an equidigital number, since it uses as much as digits as its factorization.

18850585601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384000, while the sum is 47.

The spelling of 18850585601 in words is "eighteen billion, eight hundred fifty million, five hundred eighty-five thousand, six hundred one".