19849434 has 16 divisors (see below), whose sum is σ = 43308000. Its totient is φ = 6014960.

The previous prime is 19849411. The next prime is 19849447. The reversal of 19849434 is 43494891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150309 + ... + 150440.

It is an arithmetic number, because the mean of its divisors is an integer number (2706750).

Almost surely, 2^19849434 is an apocalyptic number.

19849434 is an abundant number, since it is smaller than the sum of its proper divisors (23458566).

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

19849434 is a wasteful number, since it uses less digits than its factorization.

19849434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300765.

The product of its digits is 124416, while the sum is 42.

The square root of 19849434 is about 4455.2703621666. The cubic root of 19849434 is about 270.7588801314.

The spelling of 19849434 in words is "nineteen million, eight hundred forty-nine thousand, four hundred thirty-four".