18703316353 has 2 divisors, whose sum is σ = 18703316354. Its totient is φ = 18703316352.

The previous prime is 18703316321. The next prime is 18703316381. The reversal of 18703316353 is 35361330781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10287639184 + 8415677169 = 101428^2 + 91737^2 .

It is a cyclic number.

It is not a de Polignac number, because 18703316353 - 2⁵ = 18703316321 is a prime.

It is not a weakly prime, because it can be changed into another prime (18703316153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9351658176 + 9351658177.

It is an arithmetic number, because the mean of its divisors is an integer number (9351658177).

Almost surely, 2^18703316353 is an apocalyptic number.

It is an amenable number.

18703316353 is a deficient number, since it is larger than the sum of its proper divisors (1).

18703316353 is an equidigital number, since it uses as much as digits as its factorization.

18703316353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 18703316353 in words is "eighteen billion, seven hundred three million, three hundred sixteen thousand, three hundred fifty-three".