18154738803 has 8 divisors (see below), whose sum is σ = 24360499408. Its totient is φ = 12026068704.

The previous prime is 18154738801. The next prime is 18154738807. The reversal of 18154738803 is 30883745181.

It is a happy number.

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

It is not a de Polignac number, because 18154738803 - 2¹ = 18154738801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18154738801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19272076 + ... + 19273017.

It is an arithmetic number, because the mean of its divisors is an integer number (3045062426).

Almost surely, 2^18154738803 is an apocalyptic number.

18154738803 is a deficient number, since it is larger than the sum of its proper divisors (6205760605).

18154738803 is a wasteful number, since it uses less digits than its factorization.

18154738803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38545253.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 18154738803 in words is "eighteen billion, one hundred fifty-four million, seven hundred thirty-eight thousand, eight hundred three".