18894136 has 16 divisors (see below), whose sum is σ = 35505000. Its totient is φ = 9426144.

The previous prime is 18894133. The next prime is 18894137. The reversal of 18894136 is 63149881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18894133) 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, 1626 + ... + 6358.

Almost surely, 2^18894136 is an apocalyptic number.

It is an amenable number.

18894136 is a deficient number, since it is larger than the sum of its proper divisors (16610864).

18894136 is a wasteful number, since it uses less digits than its factorization.

18894136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238 (or 5234 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 18894136 is about 4346.7385474629. The cubic root of 18894136 is about 266.3436491596.

The spelling of 18894136 in words is "eighteen million, eight hundred ninety-four thousand, one hundred thirty-six".