18860481717373 has 2 divisors, whose sum is σ = 18860481717374. Its totient is φ = 18860481717372.

The previous prime is 18860481717361. The next prime is 18860481717463. The reversal of 18860481717373 is 37371718406881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13715038237924 + 5145443479449 = 3703382^2 + 2268357^2 .

It is an emirp because it is prime and its reverse (37371718406881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18860481717373 - 2¹⁷ = 18860481586301 is a prime.

It is a super-2 number, since 2×18860481717373² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18860481717073) 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, 9430240858686 + 9430240858687.

It is an arithmetic number, because the mean of its divisors is an integer number (9430240858687).

Almost surely, 2^{18860481717373} is an apocalyptic number.

It is an amenable number.

18860481717373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18860481717373 is an equidigital number, since it uses as much as digits as its factorization.

18860481717373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 18860481717373 in words is "eighteen trillion, eight hundred sixty billion, four hundred eighty-one million, seven hundred seventeen thousand, three hundred seventy-three".