1818411198803 has 2 divisors, whose sum is σ = 1818411198804. Its totient is φ = 1818411198802.

The previous prime is 1818411198763. The next prime is 1818411198809. The reversal of 1818411198803 is 3088911148181.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3088911148181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1818411198803 - 2²² = 1818407004499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1818411198809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909205599401 + 909205599402.

It is an arithmetic number, because the mean of its divisors is an integer number (909205599402).

Almost surely, 2^{1818411198803} is an apocalyptic number.

1818411198803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818411198803 is an equidigital number, since it uses as much as digits as its factorization.

1818411198803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 53.

The spelling of 1818411198803 in words is "one trillion, eight hundred eighteen billion, four hundred eleven million, one hundred ninety-eight thousand, eight hundred three".