18127992 has 16 divisors (see below), whose sum is σ = 45320040. Its totient is φ = 6042656.

The previous prime is 18127981. The next prime is 18127997. The reversal of 18127992 is 29972181.

It is a self number, because there is not a number n which added to its sum of digits gives 18127992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18127997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377643 + ... + 377690.

Almost surely, 2^18127992 is an apocalyptic number.

18127992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18127992 is an abundant number, since it is smaller than the sum of its proper divisors (27192048).

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

18127992 is a wasteful number, since it uses less digits than its factorization.

18127992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755342 (or 755338 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 18127992 is about 4257.6979695605. The cubic root of 18127992 is about 262.6938468385.

The spelling of 18127992 in words is "eighteen million, one hundred twenty-seven thousand, nine hundred ninety-two".