19040668 has 6 divisors (see below), whose sum is σ = 33321176. Its totient is φ = 9520332.

The previous prime is 19040653. The next prime is 19040669. The reversal of 19040668 is 86604091.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19040669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2380080 + ... + 2380087.

Almost surely, 2^19040668 is an apocalyptic number.

It is an amenable number.

19040668 is a deficient number, since it is larger than the sum of its proper divisors (14280508).

19040668 is a wasteful number, since it uses less digits than its factorization.

19040668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760171 (or 4760169 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 19040668 is about 4363.5613895074. The cubic root of 19040668 is about 267.0304126354.

The spelling of 19040668 in words is "nineteen million, forty thousand, six hundred sixty-eight".