168933489 has 16 divisors (see below), whose sum is σ = 231154560. Its totient is φ = 109677440.

The previous prime is 168933487. The next prime is 168933533. The reversal of 168933489 is 984339861.

It is a cyclic number.

It is not a de Polignac number, because 168933489 - 2¹ = 168933487 is a prime.

It is a super-3 number, since 3×168933489³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (168933487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102379 + ... + 104015.

It is an arithmetic number, because the mean of its divisors is an integer number (14447160).

Almost surely, 2^168933489 is an apocalyptic number.

It is an amenable number.

168933489 is a deficient number, since it is larger than the sum of its proper divisors (62221071).

168933489 is a wasteful number, since it uses less digits than its factorization.

168933489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its digits is 1119744, while the sum is 51.

The square root of 168933489 is about 12997.4416328753. The cubic root of 168933489 is about 552.8049423951.

The spelling of 168933489 in words is "one hundred sixty-eight million, nine hundred thirty-three thousand, four hundred eighty-nine".