18970873 has 8 divisors (see below), whose sum is σ = 20347200. Its totient is φ = 17632368.

The previous prime is 18970867. The next prime is 18970877. The reversal of 18970873 is 37807981.

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 18970873 - 2⁵ = 18970841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18970877) 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, 8413 + ... + 10426.

It is an arithmetic number, because the mean of its divisors is an integer number (2543400).

Almost surely, 2^18970873 is an apocalyptic number.

It is an amenable number.

18970873 is a deficient number, since it is larger than the sum of its proper divisors (1376327).

18970873 is a wasteful number, since it uses less digits than its factorization.

18970873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18911.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 18970873 is about 4355.5565660430. The cubic root of 18970873 is about 266.7037398110.

The spelling of 18970873 in words is "eighteen million, nine hundred seventy thousand, eight hundred seventy-three".