18893938 has 16 divisors (see below), whose sum is σ = 32445504. Its totient is φ = 8083440.

The previous prime is 18893887. The next prime is 18893947. The reversal of 18893938 is 83939881.

It is a junction number, because it is equal to n+sod(n) for n = 18893891 and 18893900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14656 + ... + 15892.

It is an arithmetic number, because the mean of its divisors is an integer number (2027844).

Almost surely, 2^18893938 is an apocalyptic number.

18893938 is a deficient number, since it is larger than the sum of its proper divisors (13551566).

18893938 is a wasteful number, since it uses less digits than its factorization.

18893938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337.

The product of its digits is 373248, while the sum is 49.

The square root of 18893938 is about 4346.7157717063. The cubic root of 18893938 is about 266.3427187788.

The spelling of 18893938 in words is "eighteen million, eight hundred ninety-three thousand, nine hundred thirty-eight".