18435942383 has 32 divisors (see below), whose sum is σ = 20884573440. Its totient is φ = 16170969600.

The previous prime is 18435942367. The next prime is 18435942439. The reversal of 18435942383 is 38324953481.

It is a cyclic number.

It is not a de Polignac number, because 18435942383 - 2⁴ = 18435942367 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18435942313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5315816 + ... + 5319282.

It is an arithmetic number, because the mean of its divisors is an integer number (652642920).

Almost surely, 2^18435942383 is an apocalyptic number.

18435942383 is a deficient number, since it is larger than the sum of its proper divisors (2448631057).

18435942383 is a wasteful number, since it uses less digits than its factorization.

18435942383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its digits is 2488320, while the sum is 50.

The spelling of 18435942383 in words is "eighteen billion, four hundred thirty-five million, nine hundred forty-two thousand, three hundred eighty-three".