1818448002953 has 2 divisors, whose sum is σ = 1818448002954. Its totient is φ = 1818448002952.

The previous prime is 1818448002949. The next prime is 1818448002961. The reversal of 1818448002953 is 3592008448181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1693412921344 + 125035081609 = 1301312^2 + 353603^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818448002953 - 2² = 1818448002949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1818448002895 and 1818448002904.

It is not a weakly prime, because it can be changed into another prime (1818448002983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909224001476 + 909224001477.

It is an arithmetic number, because the mean of its divisors is an integer number (909224001477).

Almost surely, 2^{1818448002953} is an apocalyptic number.

It is an amenable number.

1818448002953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818448002953 is an equidigital number, since it uses as much as digits as its factorization.

1818448002953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 1818448002953 in words is "one trillion, eight hundred eighteen billion, four hundred forty-eight million, two thousand, nine hundred fifty-three".