19049699238 has 16 divisors (see below), whose sum is σ = 38182049136. Its totient is φ = 6336124640.

The previous prime is 19049699209. The next prime is 19049699243. The reversal of 19049699238 is 83299694091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3440781 + ... + 3446312.

It is an arithmetic number, because the mean of its divisors is an integer number (2386378071).

Almost surely, 2^19049699238 is an apocalyptic number.

19049699238 is an abundant number, since it is smaller than the sum of its proper divisors (19132349898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19049699238 is a wasteful number, since it uses less digits than its factorization.

19049699238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887559.

The product of its (nonzero) digits is 7558272, while the sum is 60.

The spelling of 19049699238 in words is "nineteen billion, forty-nine million, six hundred ninety-nine thousand, two hundred thirty-eight".