18126938 has 8 divisors (see below), whose sum is σ = 27237600. Its totient is φ = 9047740.

The previous prime is 18126937. The next prime is 18126949. The reversal of 18126938 is 83962181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18126937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6368 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (3404700).

Almost surely, 2^18126938 is an apocalyptic number.

18126938 is a deficient number, since it is larger than the sum of its proper divisors (9110662).

18126938 is a wasteful number, since it uses less digits than its factorization.

18126938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15732.

The product of its digits is 20736, while the sum is 38.

The square root of 18126938 is about 4257.5741919549. The cubic root of 18126938 is about 262.6887555469.

The spelling of 18126938 in words is "eighteen million, one hundred twenty-six thousand, nine hundred thirty-eight".