18575143 has 2 divisors, whose sum is σ = 18575144. Its totient is φ = 18575142.

The previous prime is 18575131. The next prime is 18575149. The reversal of 18575143 is 34157581.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18575143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18575099 and 18575108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18575149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9287571 + 9287572.

It is an arithmetic number, because the mean of its divisors is an integer number (9287572).

Almost surely, 2^18575143 is an apocalyptic number.

18575143 is a deficient number, since it is larger than the sum of its proper divisors (1).

18575143 is an equidigital number, since it uses as much as digits as its factorization.

18575143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 18575143 is about 4309.8889776884. Note that the first 3 decimals coincide. The cubic root of 18575143 is about 264.8362248994.

The spelling of 18575143 in words is "eighteen million, five hundred seventy-five thousand, one hundred forty-three".