19814992 has 10 divisors (see below), whose sum is σ = 38391578. Its totient is φ = 9907488.

The previous prime is 19814989. The next prime is 19814999. The reversal of 19814992 is 29941891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16842816 + 2972176 = 4104^2 + 1724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19814999) 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 as a sum of consecutive naturals, namely, 619203 + ... + 619234.

Almost surely, 2^19814992 is an apocalyptic number.

It is an amenable number.

19814992 is a deficient number, since it is larger than the sum of its proper divisors (18576586).

19814992 is a wasteful number, since it uses less digits than its factorization.

19814992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238445 (or 1238439 counting only the distinct ones).

The product of its digits is 46656, while the sum is 43.

The square root of 19814992 is about 4451.4033742181. The cubic root of 19814992 is about 270.6021858851.

The spelling of 19814992 in words is "nineteen million, eight hundred fourteen thousand, nine hundred ninety-two".