19823105 has 16 divisors (see below), whose sum is σ = 26002944. Its totient is φ = 14442240.

The previous prime is 19823093. The next prime is 19823107. The reversal of 19823105 is 50132891.

It is not a de Polignac number, because 19823105 - 2¹⁰ = 19822081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19823107) 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 15 ways as a sum of consecutive naturals, for example, 1127 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (1625184).

Almost surely, 2^19823105 is an apocalyptic number.

It is an amenable number.

19823105 is a deficient number, since it is larger than the sum of its proper divisors (6179839).

19823105 is a wasteful number, since it uses less digits than its factorization.

19823105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 19823105 is about 4452.3145666047. The cubic root of 19823105 is about 270.6391124031.

Adding to 19823105 its reverse (50132891), we get a palindrome (69955996).

The spelling of 19823105 in words is "nineteen million, eight hundred twenty-three thousand, one hundred five".