18243250486 has 8 divisors (see below), whose sum is σ = 27365621904. Its totient is φ = 9121376520.

The previous prime is 18243250471. The next prime is 18243250499. The reversal of 18243250486 is 68405234281.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12585 + ... + 191428.

It is an arithmetic number, because the mean of its divisors is an integer number (3420702738).

Almost surely, 2^18243250486 is an apocalyptic number.

18243250486 is a deficient number, since it is larger than the sum of its proper divisors (9122371418).

18243250486 is a wasteful number, since it uses less digits than its factorization.

18243250486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248726.

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 18243250486 in words is "eighteen billion, two hundred forty-three million, two hundred fifty thousand, four hundred eighty-six".