19680369 has 24 divisors (see below), whose sum is σ = 27963936. Its totient is φ = 12297600.

The previous prime is 19680359. The next prime is 19680377. The reversal of 19680369 is 96308691.

It is not a de Polignac number, because 19680369 - 2⁹ = 19679857 is a prime.

It is a super-2 number, since 2×19680369² = 774633847952322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19680369.

It is not an unprimeable number, because it can be changed into a prime (19680329) 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 23 ways as a sum of consecutive naturals, for example, 322599 + ... + 322659.

It is an arithmetic number, because the mean of its divisors is an integer number (1165164).

Almost surely, 2^19680369 is an apocalyptic number.

It is an amenable number.

19680369 is a deficient number, since it is larger than the sum of its proper divisors (8283567).

19680369 is an equidigital number, since it uses as much as digits as its factorization.

19680369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 19680369 is about 4436.2561918807. The cubic root of 19680369 is about 269.9879692856.

The spelling of 19680369 in words is "nineteen million, six hundred eighty thousand, three hundred sixty-nine".