18157304312 has 32 divisors (see below), whose sum is σ = 38983252320. Its totient is φ = 7766753280.

The previous prime is 18157304279. The next prime is 18157304323. The reversal of 18157304312 is 21340375181.

It is a congruent number.

It is an unprimeable number.

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, 281993 + ... + 340344.

It is an arithmetic number, because the mean of its divisors is an integer number (1218226635).

Almost surely, 2^18157304312 is an apocalyptic number.

It is an amenable number.

18157304312 is an abundant number, since it is smaller than the sum of its proper divisors (20825948008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18157304312 is a wasteful number, since it uses less digits than its factorization.

18157304312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622871 (or 622867 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 18157304312 its reverse (21340375181), we get a palindrome (39497679493).

The spelling of 18157304312 in words is "eighteen billion, one hundred fifty-seven million, three hundred four thousand, three hundred twelve".