18485457347 has 8 divisors (see below), whose sum is σ = 21159200352. Its totient is φ = 15819955200.

The previous prime is 18485457337. The next prime is 18485457377. The reversal of 18485457347 is 74375458481.

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

It is not a de Polignac number, because 18485457347 - 2⁶ = 18485457283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18485457292 and 18485457301.

It is not an unprimeable number, because it can be changed into a prime (18485457307) 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 7 ways as a sum of consecutive naturals, for example, 2055404 + ... + 2064377.

It is an arithmetic number, because the mean of its divisors is an integer number (2644900044).

Almost surely, 2^18485457347 is an apocalyptic number.

18485457347 is a deficient number, since it is larger than the sum of its proper divisors (2673743005).

18485457347 is an equidigital number, since it uses as much as digits as its factorization.

18485457347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120429.

The product of its digits is 15052800, while the sum is 56.

The spelling of 18485457347 in words is "eighteen billion, four hundred eighty-five million, four hundred fifty-seven thousand, three hundred forty-seven".