18883549453 has 2 divisors, whose sum is σ = 18883549454. Its totient is φ = 18883549452.

The previous prime is 18883549439. The next prime is 18883549463. The reversal of 18883549453 is 35494538881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18327202884 + 556346569 = 135378^2 + 23587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18883549453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18883549423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441774726 + 9441774727.

It is an arithmetic number, because the mean of its divisors is an integer number (9441774727).

Almost surely, 2^18883549453 is an apocalyptic number.

It is an amenable number.

18883549453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18883549453 is an equidigital number, since it uses as much as digits as its factorization.

18883549453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16588800, while the sum is 58.

The spelling of 18883549453 in words is "eighteen billion, eight hundred eighty-three million, five hundred forty-nine thousand, four hundred fifty-three".