188000143 has 2 divisors, whose sum is σ = 188000144. Its totient is φ = 188000142.

The previous prime is 188000077. The next prime is 188000147. The reversal of 188000143 is 341000881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 188000143 - 2²¹ = 185902991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188000147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94000071 + 94000072.

It is an arithmetic number, because the mean of its divisors is an integer number (94000072).

Almost surely, 2^188000143 is an apocalyptic number.

188000143 is a deficient number, since it is larger than the sum of its proper divisors (1).

188000143 is an equidigital number, since it uses as much as digits as its factorization.

188000143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 188000143 is about 13711.3144154745. The cubic root of 188000143 is about 572.8655768460.

The spelling of 188000143 in words is "one hundred eighty-eight million, one hundred forty-three", and thus it is an aban number.