143641649 has 2 divisors, whose sum is σ = 143641650. Its totient is φ = 143641648.

The previous prime is 143641643. The next prime is 143641657. The reversal of 143641649 is 946146341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112360000 + 31281649 = 10600^2 + 5593^2 .

It is a cyclic number.

It is not a de Polignac number, because 143641649 - 2⁴ = 143641633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143641643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71820824 + 71820825.

It is an arithmetic number, because the mean of its divisors is an integer number (71820825).

Almost surely, 2^143641649 is an apocalyptic number.

It is an amenable number.

143641649 is a deficient number, since it is larger than the sum of its proper divisors (1).

143641649 is an equidigital number, since it uses as much as digits as its factorization.

143641649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 143641649 is about 11985.0594074456. The cubic root of 143641649 is about 523.7131281870.

The spelling of 143641649 in words is "one hundred forty-three million, six hundred forty-one thousand, six hundred forty-nine".