143768993 has 2 divisors, whose sum is σ = 143768994. Its totient is φ = 143768992.

The previous prime is 143768971. The next prime is 143769007. The reversal of 143768993 is 399867341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96668224 + 47100769 = 9832^2 + 6863^2 .

It is a cyclic number.

It is not a de Polignac number, because 143768993 - 2¹⁰ = 143767969 is a prime.

It is not a weakly prime, because it can be changed into another prime (143768903) 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, 71884496 + 71884497.

It is an arithmetic number, because the mean of its divisors is an integer number (71884497).

Almost surely, 2^143768993 is an apocalyptic number.

It is an amenable number.

143768993 is a deficient number, since it is larger than the sum of its proper divisors (1).

143768993 is an equidigital number, since it uses as much as digits as its factorization.

143768993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 143768993 is about 11990.3708449739. The cubic root of 143768993 is about 523.8678466048.

The spelling of 143768993 in words is "one hundred forty-three million, seven hundred sixty-eight thousand, nine hundred ninety-three".