18307149671053 has 2 divisors, whose sum is σ = 18307149671054. Its totient is φ = 18307149671052.

The previous prime is 18307149671051. The next prime is 18307149671149. The reversal of 18307149671053 is 35017694170381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17523290882889 + 783858788164 = 4186083^2 + 885358^2 .

It is a cyclic number.

It is not a de Polignac number, because 18307149671053 - 2¹ = 18307149671051 is a prime.

It is a super-2 number, since 2×18307149671053² (a number of 27 digits) contains 22 as substring.

Together with 18307149671051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18307149670985 and 18307149671003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18307149671051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9153574835526 + 9153574835527.

It is an arithmetic number, because the mean of its divisors is an integer number (9153574835527).

Almost surely, 2^{18307149671053} is an apocalyptic number.

It is an amenable number.

18307149671053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18307149671053 is an equidigital number, since it uses as much as digits as its factorization.

18307149671053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 18307149671053 in words is "eighteen trillion, three hundred seven billion, one hundred forty-nine million, six hundred seventy-one thousand, fifty-three".