18874003 has 2 divisors, whose sum is σ = 18874004. Its totient is φ = 18874002.

The previous prime is 18873997. The next prime is 18874013. The reversal of 18874003 is 30047881.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18874003 is a prime.

It is not a weakly prime, because it can be changed into another prime (18874013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437001 + 9437002.

It is an arithmetic number, because the mean of its divisors is an integer number (9437002).

Almost surely, 2^18874003 is an apocalyptic number.

18874003 is a deficient number, since it is larger than the sum of its proper divisors (1).

18874003 is an equidigital number, since it uses as much as digits as its factorization.

18874003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18874003 is about 4344.4220559241. The cubic root of 18874003 is about 266.2490130522.

The spelling of 18874003 in words is "eighteen million, eight hundred seventy-four thousand, three".