168613489 has 8 divisors (see below), whose sum is σ = 185662368. Its totient is φ = 151851360.

The previous prime is 168613441. The next prime is 168613493. The reversal of 168613489 is 984316861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168613489 - 2¹¹ = 168611441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168613439) 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 in 7 ways as a sum of consecutive naturals, for example, 70452 + ... + 72805.

It is an arithmetic number, because the mean of its divisors is an integer number (23207796).

Almost surely, 2^168613489 is an apocalyptic number.

It is an amenable number.

168613489 is a deficient number, since it is larger than the sum of its proper divisors (17048879).

168613489 is a wasteful number, since it uses less digits than its factorization.

168613489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143375.

The product of its digits is 248832, while the sum is 46.

The square root of 168613489 is about 12985.1256828727. The cubic root of 168613489 is about 552.4556739826.

The spelling of 168613489 in words is "one hundred sixty-eight million, six hundred thirteen thousand, four hundred eighty-nine".