4818661823 has 4 divisors (see below), whose sum is σ = 4866371448. Its totient is φ = 4770952200.

The previous prime is 4818661789. The next prime is 4818661843. The reversal of 4818661823 is 3281668184.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4818661823 - 2³⁰ = 3744919999 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 (4818661843) 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, 23854661 + ... + 23854862.

It is an arithmetic number, because the mean of its divisors is an integer number (1216592862).

Almost surely, 2^4818661823 is an apocalyptic number.

4818661823 is a deficient number, since it is larger than the sum of its proper divisors (47709625).

4818661823 is a wasteful number, since it uses less digits than its factorization.

4818661823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47709624.

The product of its digits is 442368, while the sum is 47.

The square root of 4818661823 is about 69416.5817582514. The cubic root of 4818661823 is about 1689.0486134729.

The spelling of 4818661823 in words is "four billion, eight hundred eighteen million, six hundred sixty-one thousand, eight hundred twenty-three".