1818514543663 has 8 divisors (see below), whose sum is σ = 1883098005120. Its totient is φ = 1754301188640.

The previous prime is 1818514543627. The next prime is 1818514543693. The reversal of 1818514543663 is 3663454158181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818514543663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818514543693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92516608 + ... + 92536261.

It is an arithmetic number, because the mean of its divisors is an integer number (235387250640).

Almost surely, 2^{1818514543663} is an apocalyptic number.

1818514543663 is a deficient number, since it is larger than the sum of its proper divisors (64583461457).

1818514543663 is a wasteful number, since it uses less digits than its factorization.

1818514543663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185053217.

The product of its digits is 8294400, while the sum is 55.

The spelling of 1818514543663 in words is "one trillion, eight hundred eighteen billion, five hundred fourteen million, five hundred forty-three thousand, six hundred sixty-three".