18542356345 has 8 divisors (see below), whose sum is σ = 22256410176. Its totient is φ = 14830163376.

The previous prime is 18542356319. The next prime is 18542356351. The reversal of 18542356345 is 54365324581.

It is a happy number.

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-18542356345 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18542356295 and 18542356304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443197 + ... + 483226.

It is an arithmetic number, because the mean of its divisors is an integer number (2782051272).

Almost surely, 2^18542356345 is an apocalyptic number.

It is an amenable number.

18542356345 is a deficient number, since it is larger than the sum of its proper divisors (3714053831).

18542356345 is an equidigital number, since it uses as much as digits as its factorization.

18542356345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930431.

The product of its digits is 1728000, while the sum is 46.

The spelling of 18542356345 in words is "eighteen billion, five hundred forty-two million, three hundred fifty-six thousand, three hundred forty-five".