18123644582 has 8 divisors (see below), whose sum is σ = 27198951096. Its totient is φ = 9057327552.

The previous prime is 18123644579. The next prime is 18123644587. The reversal of 18123644582 is 28544632181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123644587) 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, 2242328 + ... + 2250395.

It is an arithmetic number, because the mean of its divisors is an integer number (3399868887).

Almost surely, 2^18123644582 is an apocalyptic number.

18123644582 is a deficient number, since it is larger than the sum of its proper divisors (9075306514).

18123644582 is a wasteful number, since it uses less digits than its factorization.

18123644582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494742.

The product of its digits is 368640, while the sum is 44.

The spelling of 18123644582 in words is "eighteen billion, one hundred twenty-three million, six hundred forty-four thousand, five hundred eighty-two".