19378182538 has 48 divisors (see below), whose sum is σ = 34413814656. Its totient is φ = 8112424320.

The previous prime is 19378182529. The next prime is 19378182569. The reversal of 19378182538 is 83528187391.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1715806 + ... + 1727062.

It is an arithmetic number, because the mean of its divisors is an integer number (716954472).

Almost surely, 2^19378182538 is an apocalyptic number.

19378182538 is a deficient number, since it is larger than the sum of its proper divisors (15035632118).

19378182538 is a wasteful number, since it uses less digits than its factorization.

19378182538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11759 (or 11746 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The spelling of 19378182538 in words is "nineteen billion, three hundred seventy-eight million, one hundred eighty-two thousand, five hundred thirty-eight".