19040369445 has 12 divisors (see below), whose sum is σ = 33003307116. Its totient is φ = 10154863680.

The previous prime is 19040369437. The next prime is 19040369449. The reversal of 19040369445 is 54496304091.

It can be written as a sum of positive squares in 2 ways, for example, as 11949550596 + 7090818849 = 109314^2 + 84207^2 .

It is not a de Polignac number, because 19040369445 - 2³ = 19040369437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 423119321 = 19040369445 / (1 + 9 + 0 + 4 + 0 + 3 + 6 + 9 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 19040369445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19040369449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211559616 + ... + 211559705.

It is an arithmetic number, because the mean of its divisors is an integer number (2750275593).

Almost surely, 2^19040369445 is an apocalyptic number.

19040369445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19040369445 is a deficient number, since it is larger than the sum of its proper divisors (13962937671).

19040369445 is a wasteful number, since it uses less digits than its factorization.

19040369445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423119332 (or 423119329 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 19040369445 in words is "nineteen billion, forty million, three hundred sixty-nine thousand, four hundred forty-five".