18683670353 has 2 divisors, whose sum is σ = 18683670354. Its totient is φ = 18683670352.

The previous prime is 18683670289. The next prime is 18683670373. The reversal of 18683670353 is 35307638681.

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., 18683609344 + 61009 = 136688^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 18683670353 - 2⁶ = 18683670289 is a prime.

It is a super-2 number, since 2×18683670353² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18683670373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9341835176 + 9341835177.

It is an arithmetic number, because the mean of its divisors is an integer number (9341835177).

Almost surely, 2^18683670353 is an apocalyptic number.

It is an amenable number.

18683670353 is a deficient number, since it is larger than the sum of its proper divisors (1).

18683670353 is an equidigital number, since it uses as much as digits as its factorization.

18683670353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 18683670353 in words is "eighteen billion, six hundred eighty-three million, six hundred seventy thousand, three hundred fifty-three".