18482376553 has 2 divisors, whose sum is σ = 18482376554. Its totient is φ = 18482376552.

The previous prime is 18482376529. The next prime is 18482376571. The reversal of 18482376553 is 35567328481.

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., 9515612304 + 8966764249 = 97548^2 + 94693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18482376553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18482376553.

It is not a weakly prime, because it can be changed into another prime (18482376853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9241188276 + 9241188277.

It is an arithmetic number, because the mean of its divisors is an integer number (9241188277).

Almost surely, 2^18482376553 is an apocalyptic number.

It is an amenable number.

18482376553 is a deficient number, since it is larger than the sum of its proper divisors (1).

18482376553 is an equidigital number, since it uses as much as digits as its factorization.

18482376553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 52.

The spelling of 18482376553 in words is "eighteen billion, four hundred eighty-two million, three hundred seventy-six thousand, five hundred fifty-three".