18456324943 has 8 divisors (see below), whose sum is σ = 21094480512. Its totient is φ = 15818553816.

The previous prime is 18456324857. The next prime is 18456324949. The reversal of 18456324943 is 34942365481.

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

It is a cyclic number.

It is not a de Polignac number, because 18456324943 - 2¹³ = 18456316751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18456324949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15396 + ... + 192742.

It is an arithmetic number, because the mean of its divisors is an integer number (2636810064).

Almost surely, 2^18456324943 is an apocalyptic number.

18456324943 is a deficient number, since it is larger than the sum of its proper divisors (2638155569).

18456324943 is a wasteful number, since it uses less digits than its factorization.

18456324943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192221.

The product of its digits is 2488320, while the sum is 49.

The spelling of 18456324943 in words is "eighteen billion, four hundred fifty-six million, three hundred twenty-four thousand, nine hundred forty-three".