19040769 has 24 divisors (see below), whose sum is σ = 30741984. Its totient is φ = 11256000.

The previous prime is 19040741. The next prime is 19040771. The reversal of 19040769 is 96704091.

19040769 is a `hidden beast` number, since 190 + 407 + 69 = 666.

It is not a de Polignac number, because 19040769 - 2⁵ = 19040737 is a prime.

It is a super-2 number, since 2×19040769² = 725101768222722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19040069) 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 23 ways as a sum of consecutive naturals, for example, 1714 + ... + 6404.

It is an arithmetic number, because the mean of its divisors is an integer number (1280916).

Almost surely, 2^19040769 is an apocalyptic number.

It is an amenable number.

19040769 is a deficient number, since it is larger than the sum of its proper divisors (11701215).

19040769 is a wasteful number, since it uses less digits than its factorization.

19040769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749 (or 4746 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 19040769 is about 4363.5729626076. The cubic root of 19040769 is about 267.0308847832.

The spelling of 19040769 in words is "nineteen million, forty thousand, seven hundred sixty-nine".