19050890409 has 24 divisors (see below), whose sum is σ = 29382175680. Its totient is φ = 11865867552.

The previous prime is 19050890393. The next prime is 19050890413. The reversal of 19050890409 is 90409805091.

19050890409 is a `hidden beast` number, since 19 + 0 + 508 + 90 + 40 + 9 = 666.

It is not a de Polignac number, because 19050890409 - 2⁴ = 19050890393 is a prime.

It is a super-3 number, since 3×19050890409³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19050890429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061254 + ... + 1079055.

It is an arithmetic number, because the mean of its divisors is an integer number (1224257320).

Almost surely, 2^19050890409 is an apocalyptic number.

It is an amenable number.

19050890409 is a deficient number, since it is larger than the sum of its proper divisors (10331285271).

19050890409 is a wasteful number, since it uses less digits than its factorization.

19050890409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140381 (or 2140378 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 19050890409 in words is "nineteen billion, fifty million, eight hundred ninety thousand, four hundred nine".