19119668 has 12 divisors (see below), whose sum is σ = 33607140. Its totient is φ = 9517632.

The previous prime is 19119641. The next prime is 19119677. The reversal of 19119668 is 86691191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12759184 + 6360484 = 3572^2 + 2522^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9521 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (2800595).

Almost surely, 2^19119668 is an apocalyptic number.

It is an amenable number.

19119668 is a deficient number, since it is larger than the sum of its proper divisors (14487472).

19119668 is a wasteful number, since it uses less digits than its factorization.

19119668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21106 (or 21104 counting only the distinct ones).

The product of its digits is 23328, while the sum is 41.

The square root of 19119668 is about 4372.6042583339. The cubic root of 19119668 is about 267.3992073756.

The spelling of 19119668 in words is "nineteen million, one hundred nineteen thousand, six hundred sixty-eight".