18485854556374 has 4 divisors (see below), whose sum is σ = 27728781834564. Its totient is φ = 9242927278186.

The previous prime is 18485854556359. The next prime is 18485854556413. The reversal of 18485854556374 is 47365545858481.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18485854556297 and 18485854556306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4621463639092 + ... + 4621463639095.

It is an arithmetic number, because the mean of its divisors is an integer number (6932195458641).

Almost surely, 2^{18485854556374} is an apocalyptic number.

18485854556374 is a deficient number, since it is larger than the sum of its proper divisors (9242927278190).

18485854556374 is an equidigital number, since it uses as much as digits as its factorization.

18485854556374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242927278189.

The product of its digits is 2580480000, while the sum is 73.

The spelling of 18485854556374 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred fifty-four million, five hundred fifty-six thousand, three hundred seventy-four".