3818818663 has 4 divisors (see below), whose sum is σ = 4165984008. Its totient is φ = 3471653320.

The previous prime is 3818818657. The next prime is 3818818739. The reversal of 3818818663 is 3668188183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3668188183 = 11 ⋅333471653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3818818663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3818818663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818818763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173582656 + ... + 173582677.

It is an arithmetic number, because the mean of its divisors is an integer number (1041496002).

Almost surely, 2^3818818663 is an apocalyptic number.

3818818663 is a deficient number, since it is larger than the sum of its proper divisors (347165345).

3818818663 is a wasteful number, since it uses less digits than its factorization.

3818818663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347165344.

The product of its digits is 1327104, while the sum is 52.

The square root of 3818818663 is about 61796.5910305738. The cubic root of 3818818663 is about 1563.0625055933.

The spelling of 3818818663 in words is "three billion, eight hundred eighteen million, eight hundred eighteen thousand, six hundred sixty-three".