19138712 has 16 divisors (see below), whose sum is σ = 35935800. Its totient is φ = 9555840.

The previous prime is 19138711. The next prime is 19138733. The reversal of 19138712 is 21783191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6887 + ... + 9257.

Almost surely, 2^19138712 is an apocalyptic number.

It is an amenable number.

19138712 is a deficient number, since it is larger than the sum of its proper divisors (16797088).

19138712 is a wasteful number, since it uses less digits than its factorization.

19138712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386 (or 3382 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 19138712 is about 4374.7813659656. The cubic root of 19138712 is about 267.4879582316.

The spelling of 19138712 in words is "nineteen million, one hundred thirty-eight thousand, seven hundred twelve".