18671153346193 has 2 divisors, whose sum is σ = 18671153346194. Its totient is φ = 18671153346192.

The previous prime is 18671153346127. The next prime is 18671153346211. The reversal of 18671153346193 is 39164335117681.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10193639791504 + 8477513554689 = 3192748^2 + 2911617^2 .

It is a cyclic number.

It is not a de Polignac number, because 18671153346193 - 2¹³ = 18671153338001 is a prime.

It is a super-2 number, since 2×18671153346193² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18671153341193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335576673096 + 9335576673097.

It is an arithmetic number, because the mean of its divisors is an integer number (9335576673097).

Almost surely, 2^{18671153346193} is an apocalyptic number.

It is an amenable number.

18671153346193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18671153346193 is an equidigital number, since it uses as much as digits as its factorization.

18671153346193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 58.

The spelling of 18671153346193 in words is "eighteen trillion, six hundred seventy-one billion, one hundred fifty-three million, three hundred forty-six thousand, one hundred ninety-three".