18438854435 has 8 divisors (see below), whose sum is σ = 22223249520. Its totient is φ = 14686667424.

The previous prime is 18438854407. The next prime is 18438854509. The reversal of 18438854435 is 53445883481.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18438854435 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8050757 + ... + 8053046.

It is an arithmetic number, because the mean of its divisors is an integer number (2777906190).

Almost surely, 2^18438854435 is an apocalyptic number.

18438854435 is a deficient number, since it is larger than the sum of its proper divisors (3784395085).

18438854435 is a wasteful number, since it uses less digits than its factorization.

18438854435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16104037.

The product of its digits is 7372800, while the sum is 53.

The spelling of 18438854435 in words is "eighteen billion, four hundred thirty-eight million, eight hundred fifty-four thousand, four hundred thirty-five".