19040049 has 16 divisors (see below), whose sum is σ = 32237440. Its totient is φ = 10879920.

The previous prime is 19040041. The next prime is 19040053. The reversal of 19040049 is 94004091.

It is not a de Polignac number, because 19040049 - 2³ = 19040041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19040041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50182 + ... + 50559.

It is an arithmetic number, because the mean of its divisors is an integer number (2014840).

Almost surely, 2^19040049 is an apocalyptic number.

It is an amenable number.

19040049 is a deficient number, since it is larger than the sum of its proper divisors (13197391).

19040049 is a wasteful number, since it uses less digits than its factorization.

19040049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100757 (or 100751 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 19040049 is about 4363.4904606290. The cubic root of 19040049 is about 267.0275189412.

The spelling of 19040049 in words is "nineteen million, forty thousand, forty-nine".