18703909323 has 18 divisors (see below), whose sum is σ = 29696107532. Its totient is φ = 11335701960.

The previous prime is 18703909313. The next prime is 18703909369. The reversal of 18703909323 is 32390930781.

It is not a de Polignac number, because 18703909323 - 2⁸ = 18703909067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18703909313) 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 17 ways as a sum of consecutive naturals, for example, 8586565 + ... + 8588742.

Almost surely, 2^18703909323 is an apocalyptic number.

18703909323 is a deficient number, since it is larger than the sum of its proper divisors (10992198209).

18703909323 is a wasteful number, since it uses less digits than its factorization.

18703909323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17175335 (or 17175321 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

It can be divided in two parts, 1870 and 3909323, that added together give a palindrome (3911193).

The spelling of 18703909323 in words is "eighteen billion, seven hundred three million, nine hundred nine thousand, three hundred twenty-three".