18010489423 has 4 divisors (see below), whose sum is σ = 18042032008. Its totient is φ = 17978946840.

The previous prime is 18010489421. The next prime is 18010489429. The reversal of 18010489423 is 32498401081.

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 18010489423 - 2¹ = 18010489421 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 (18010489421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15770436 + ... + 15771577.

It is an arithmetic number, because the mean of its divisors is an integer number (4510508002).

Almost surely, 2^18010489423 is an apocalyptic number.

18010489423 is a deficient number, since it is larger than the sum of its proper divisors (31542585).

18010489423 is an equidigital number, since it uses as much as digits as its factorization.

18010489423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31542584.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 18010489423 in words is "eighteen billion, ten million, four hundred eighty-nine thousand, four hundred twenty-three".