143168993 has 16 divisors (see below), whose sum is σ = 159371520. Its totient is φ = 127526400.

The previous prime is 143168959. The next prime is 143168999. The reversal of 143168993 is 399861341.

It is a cyclic number.

It is not a de Polignac number, because 143168993 - 2²⁰ = 142120417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143168999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115688 + ... + 116918.

It is an arithmetic number, because the mean of its divisors is an integer number (9960720).

Almost surely, 2^143168993 is an apocalyptic number.

It is an amenable number.

143168993 is a deficient number, since it is larger than the sum of its proper divisors (16202527).

143168993 is a wasteful number, since it uses less digits than its factorization.

143168993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448.

The product of its digits is 139968, while the sum is 44.

The square root of 143168993 is about 11965.3246090526. The cubic root of 143168993 is about 523.1380671254.

The spelling of 143168993 in words is "one hundred forty-three million, one hundred sixty-eight thousand, nine hundred ninety-three".