19419834 has 16 divisors (see below), whose sum is σ = 44388288. Its totient is φ = 5548512.

The previous prime is 19419823. The next prime is 19419839. The reversal of 19419834 is 43891491.

It is a junction number, because it is equal to n+sod(n) for n = 19419792 and 19419801.

It is not an unprimeable number, because it can be changed into a prime (19419839) by changing a digit.

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, 231147 + ... + 231230.

It is an arithmetic number, because the mean of its divisors is an integer number (2774268).

Almost surely, 2^19419834 is an apocalyptic number.

19419834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19419834 is an abundant number, since it is smaller than the sum of its proper divisors (24968454).

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

19419834 is a wasteful number, since it uses less digits than its factorization.

19419834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462389.

The product of its digits is 31104, while the sum is 39.

The square root of 19419834 is about 4406.7940727926. The cubic root of 19419834 is about 268.7912773087.

The spelling of 19419834 in words is "nineteen million, four hundred nineteen thousand, eight hundred thirty-four".