18965573 has 8 divisors (see below), whose sum is σ = 21080736. Its totient is φ = 16915600.

The previous prime is 18965567. The next prime is 18965599. The reversal of 18965573 is 37556981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18965573 - 2¹⁰ = 18964549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18965503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15683 + ... + 16848.

It is an arithmetic number, because the mean of its divisors is an integer number (2635092).

Almost surely, 2^18965573 is an apocalyptic number.

It is an amenable number.

18965573 is a deficient number, since it is larger than the sum of its proper divisors (2115163).

18965573 is a wasteful number, since it uses less digits than its factorization.

18965573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595.

The product of its digits is 226800, while the sum is 44.

The square root of 18965573 is about 4354.9481053165. The cubic root of 18965573 is about 266.6789006540.

The spelling of 18965573 in words is "eighteen million, nine hundred sixty-five thousand, five hundred seventy-three".