143649733 has 2 divisors, whose sum is σ = 143649734. Its totient is φ = 143649732.

The previous prime is 143649661. The next prime is 143649739. The reversal of 143649733 is 337946341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127983969 + 15665764 = 11313^2 + 3958^2 .

It is a cyclic number.

It is not a de Polignac number, because 143649733 - 2⁹ = 143649221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143649739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71824866 + 71824867.

It is an arithmetic number, because the mean of its divisors is an integer number (71824867).

Almost surely, 2^143649733 is an apocalyptic number.

It is an amenable number.

143649733 is a deficient number, since it is larger than the sum of its proper divisors (1).

143649733 is an equidigital number, since it uses as much as digits as its factorization.

143649733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 143649733 is about 11985.3966559309. The cubic root of 143649733 is about 523.7229526762.

The spelling of 143649733 in words is "one hundred forty-three million, six hundred forty-nine thousand, seven hundred thirty-three".