19834138 has 16 divisors (see below), whose sum is σ = 33160320. Its totient is φ = 8842176.

The previous prime is 19834127. The next prime is 19834151. The reversal of 19834138 is 83143891.

It is a junction number, because it is equal to n+sod(n) for n = 19834097 and 19834106.

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, 14706 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (2072520).

Almost surely, 2^19834138 is an apocalyptic number.

19834138 is a deficient number, since it is larger than the sum of its proper divisors (13326182).

19834138 is a wasteful number, since it uses less digits than its factorization.

19834138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30741.

The product of its digits is 20736, while the sum is 37.

The square root of 19834138 is about 4453.5534127256. The cubic root of 19834138 is about 270.6893132089.

The spelling of 19834138 in words is "nineteen million, eight hundred thirty-four thousand, one hundred thirty-eight".