18500020093337 has 2 divisors, whose sum is σ = 18500020093338. Its totient is φ = 18500020093336.

The previous prime is 18500020093333. The next prime is 18500020093339. The reversal of 18500020093337 is 73339002000581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17340028626496 + 1159991466841 = 4164136^2 + 1077029^2 .

It is a cyclic number.

It is not a de Polignac number, because 18500020093337 - 2² = 18500020093333 is a prime.

Together with 18500020093339, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18500020093294 and 18500020093303.

It is not a weakly prime, because it can be changed into another prime (18500020093333) 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, 9250010046668 + 9250010046669.

It is an arithmetic number, because the mean of its divisors is an integer number (9250010046669).

Almost surely, 2^{18500020093337} is an apocalyptic number.

It is an amenable number.

18500020093337 is a deficient number, since it is larger than the sum of its proper divisors (1).

18500020093337 is an equidigital number, since it uses as much as digits as its factorization.

18500020093337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 18500020093337 in words is "eighteen trillion, five hundred billion, twenty million, ninety-three thousand, three hundred thirty-seven".