19873069 has 16 divisors (see below), whose sum is σ = 21732480. Its totient is φ = 18109440.

The previous prime is 19873013. The next prime is 19873079. The reversal of 19873069 is 96037891.

It is a cyclic number.

It is not a de Polignac number, because 19873069 - 2¹¹ = 19871021 is a prime.

It is a super-2 number, since 2×19873069² = 789877742957522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19873079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75432 + ... + 75694.

It is an arithmetic number, because the mean of its divisors is an integer number (1358280).

Almost surely, 2^19873069 is an apocalyptic number.

19873069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19873069 is a deficient number, since it is larger than the sum of its proper divisors (1859411).

19873069 is a wasteful number, since it uses less digits than its factorization.

19873069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 19873069 is about 4457.9220495652. The cubic root of 19873069 is about 270.8663029738.

The spelling of 19873069 in words is "nineteen million, eight hundred seventy-three thousand, sixty-nine".