143638543 has 2 divisors, whose sum is σ = 143638544. Its totient is φ = 143638542.

The previous prime is 143638507. The next prime is 143638549. The reversal of 143638543 is 345836341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143638543 - 2⁹ = 143638031 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143638549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71819271 + 71819272.

It is an arithmetic number, because the mean of its divisors is an integer number (71819272).

Almost surely, 2^143638543 is an apocalyptic number.

143638543 is a deficient number, since it is larger than the sum of its proper divisors (1).

143638543 is an equidigital number, since it uses as much as digits as its factorization.

143638543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 143638543 is about 11984.9298287474. The cubic root of 143638543 is about 523.7093533656.

The spelling of 143638543 in words is "one hundred forty-three million, six hundred thirty-eight thousand, five hundred forty-three".