19503524138 has 16 divisors (see below), whose sum is σ = 34338251904. Its totient is φ = 8132743440.

The previous prime is 19503524087. The next prime is 19503524179. The reversal of 19503524138 is 83142530591.

It is a junction number, because it is equal to n+sod(n) for n = 19503524095 and 19503524104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18825278 + ... + 18826313.

It is an arithmetic number, because the mean of its divisors is an integer number (2146140744).

Almost surely, 2^19503524138 is an apocalyptic number.

19503524138 is a deficient number, since it is larger than the sum of its proper divisors (14834727766).

19503524138 is a wasteful number, since it uses less digits than its factorization.

19503524138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651637.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 19503524138 in words is "nineteen billion, five hundred three million, five hundred twenty-four thousand, one hundred thirty-eight".