18875603 has 2 divisors, whose sum is σ = 18875604. Its totient is φ = 18875602.

The previous prime is 18875599. The next prime is 18875609. The reversal of 18875603 is 30657881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18875603 - 2² = 18875599 is a prime.

It is a super-2 number, since 2×18875603² = 712576777227218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18875609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437801 + 9437802.

It is an arithmetic number, because the mean of its divisors is an integer number (9437802).

Almost surely, 2^18875603 is an apocalyptic number.

18875603 is a deficient number, since it is larger than the sum of its proper divisors (1).

18875603 is an equidigital number, since it uses as much as digits as its factorization.

18875603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18875603 is about 4344.6061961932. The cubic root of 18875603 is about 266.2565363880.

The spelling of 18875603 in words is "eighteen million, eight hundred seventy-five thousand, six hundred three".