18415415453 has 2 divisors, whose sum is σ = 18415415454. Its totient is φ = 18415415452.

The previous prime is 18415415437. The next prime is 18415415471. The reversal of 18415415453 is 35451451481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18375700249 + 39715204 = 135557^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 18415415453 - 2⁴ = 18415415437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18415415453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18415415413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9207707726 + 9207707727.

It is an arithmetic number, because the mean of its divisors is an integer number (9207707727).

Almost surely, 2^18415415453 is an apocalyptic number.

It is an amenable number.

18415415453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18415415453 is an equidigital number, since it uses as much as digits as its factorization.

18415415453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 41.

The spelling of 18415415453 in words is "eighteen billion, four hundred fifteen million, four hundred fifteen thousand, four hundred fifty-three".