19079434538 has 8 divisors (see below), whose sum is σ = 28621164132. Its totient is φ = 9539046496.

The previous prime is 19079434523. The next prime is 19079434567. The reversal of 19079434538 is 83543497091.

It can be written as a sum of positive squares in 2 ways, for example, as 17721733129 + 1357701409 = 133123^2 + 36847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19079434538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299045 + ... + 357192.

Almost surely, 2^19079434538 is an apocalyptic number.

19079434538 is a deficient number, since it is larger than the sum of its proper divisors (9541729594).

19079434538 is a wasteful number, since it uses less digits than its factorization.

19079434538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670776.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 19079434538 in words is "nineteen billion, seventy-nine million, four hundred thirty-four thousand, five hundred thirty-eight".