18185427147 has 16 divisors (see below), whose sum is σ = 24910163712. Its totient is φ = 11792354400.

The previous prime is 18185427077. The next prime is 18185427149. The reversal of 18185427147 is 74172458181.

It is not a de Polignac number, because 18185427147 - 2¹¹ = 18185425099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18185427096 and 18185427105.

It is not an unprimeable number, because it can be changed into a prime (18185427149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368272 + ... + 414722.

It is an arithmetic number, because the mean of its divisors is an integer number (1556885232).

Almost surely, 2^18185427147 is an apocalyptic number.

18185427147 is a deficient number, since it is larger than the sum of its proper divisors (6724736565).

18185427147 is a wasteful number, since it uses less digits than its factorization.

18185427147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50018.

The product of its digits is 501760, while the sum is 48.

The spelling of 18185427147 in words is "eighteen billion, one hundred eighty-five million, four hundred twenty-seven thousand, one hundred forty-seven".