18125182231 has 12 divisors (see below), whose sum is σ = 19747115688. Its totient is φ = 16628268384.

The previous prime is 18125182199. The next prime is 18125182277. The reversal of 18125182231 is 13228152181.

It is not a de Polignac number, because 18125182231 - 2⁵ = 18125182199 is a prime.

It is a super-2 number, since 2×18125182231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125180231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301440 + ... + 356533.

It is an arithmetic number, because the mean of its divisors is an integer number (1645592974).

Almost surely, 2^18125182231 is an apocalyptic number.

18125182231 is a deficient number, since it is larger than the sum of its proper divisors (1621933457).

18125182231 is a wasteful number, since it uses less digits than its factorization.

18125182231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658162 (or 658149 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The spelling of 18125182231 in words is "eighteen billion, one hundred twenty-five million, one hundred eighty-two thousand, two hundred thirty-one".