19983834 has 48 divisors (see below), whose sum is σ = 48371232. Its totient is φ = 6146928.

The previous prime is 19983833. The next prime is 19983853. The reversal of 19983834 is 43838991.

It is a self number, because there is not a number n which added to its sum of digits gives 19983834.

It is not an unprimeable number, because it can be changed into a prime (19983833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4737 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (1007734).

Almost surely, 2^19983834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19983834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24185616).

19983834 is an abundant number, since it is smaller than the sum of its proper divisors (28387398).

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

19983834 is a wasteful number, since it uses less digits than its factorization.

19983834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193 (or 3181 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 19983834 is about 4470.3281758725. The cubic root of 19983834 is about 271.3686064869.

It can be divided in two parts, 1998 and 3834, that added together give a cube (5832 = 18³).

The spelling of 19983834 in words is "nineteen million, nine hundred eighty-three thousand, eight hundred thirty-four".