18964373 has 8 divisors (see below), whose sum is σ = 19278168. Its totient is φ = 18653184.

The previous prime is 18964369. The next prime is 18964399. The reversal of 18964373 is 37346981.

It can be written as a sum of positive squares in 4 ways, for example, as 362404 + 18601969 = 602^2 + 4313^2 .

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 18964373 - 2² = 18964369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18964373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964073) 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 7 ways as a sum of consecutive naturals, for example, 18215 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (2409771).

Almost surely, 2^18964373 is an apocalyptic number.

It is an amenable number.

18964373 is a deficient number, since it is larger than the sum of its proper divisors (313795).

18964373 is a wasteful number, since it uses less digits than its factorization.

18964373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303.

The product of its digits is 108864, while the sum is 41.

The square root of 18964373 is about 4354.8103288203. The cubic root of 18964373 is about 266.6732760515.

The spelling of 18964373 in words is "eighteen million, nine hundred sixty-four thousand, three hundred seventy-three".