18257884312 has 16 divisors (see below), whose sum is σ = 34744482360. Its totient is φ = 8992689024.

The previous prime is 18257884303. The next prime is 18257884397. The reversal of 18257884312 is 21348875281.

It is a happy number.

It is a super-4 number, since 4×18257884312⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17031073 + ... + 17032144.

Almost surely, 2^18257884312 is an apocalyptic number.

It is an amenable number.

18257884312 is a deficient number, since it is larger than the sum of its proper divisors (16486598048).

18257884312 is a wasteful number, since it uses less digits than its factorization.

18257884312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34063290 (or 34063286 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The spelling of 18257884312 in words is "eighteen billion, two hundred fifty-seven million, eight hundred eighty-four thousand, three hundred twelve".