18875273 has 2 divisors, whose sum is σ = 18875274. Its totient is φ = 18875272.

The previous prime is 18875267. The next prime is 18875299. The reversal of 18875273 is 37257881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16540489 + 2334784 = 4067^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 18875273 - 2¹⁰ = 18874249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18875273.

It is not a weakly prime, because it can be changed into another prime (18875243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437636 + 9437637.

It is an arithmetic number, because the mean of its divisors is an integer number (9437637).

Almost surely, 2^18875273 is an apocalyptic number.

It is an amenable number.

18875273 is a deficient number, since it is larger than the sum of its proper divisors (1).

18875273 is an equidigital number, since it uses as much as digits as its factorization.

18875273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

The square root of 18875273 is about 4344.5682179015. The cubic root of 18875273 is about 266.2549847348.

The spelling of 18875273 in words is "eighteen million, eight hundred seventy-five thousand, two hundred seventy-three".