19830969 has 6 divisors (see below), whose sum is σ = 28644746. Its totient is φ = 13220640.

The previous prime is 19830953. The next prime is 19830973. The reversal of 19830969 is 96903891.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 4149369 = 3960^2 + 2037^2 .

It is not a de Polignac number, because 19830969 - 2⁴ = 19830953 is a prime.

It is a super-2 number, since 2×19830969² = 786534662957922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19830919) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1101712 + ... + 1101729.

Almost surely, 2^19830969 is an apocalyptic number.

It is an amenable number.

19830969 is a deficient number, since it is larger than the sum of its proper divisors (8813777).

19830969 is a wasteful number, since it uses less digits than its factorization.

19830969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203447 (or 2203444 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 19830969 is about 4453.1976151974. The cubic root of 19830969 is about 270.6748959766.

The spelling of 19830969 in words is "nineteen million, eight hundred thirty thousand, nine hundred sixty-nine".