168489513 has 24 divisors (see below), whose sum is σ = 256501440. Its totient is φ = 106365600.

The previous prime is 168489509. The next prime is 168489521. The reversal of 168489513 is 315984861.

168489513 is a `hidden beast` number, since 168 + 489 + 5 + 1 + 3 = 666.

It is not a de Polignac number, because 168489513 - 2² = 168489509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168489593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16878 + ... + 24936.

It is an arithmetic number, because the mean of its divisors is an integer number (10687560).

Almost surely, 2^168489513 is an apocalyptic number.

It is an amenable number.

168489513 is a deficient number, since it is larger than the sum of its proper divisors (88011927).

168489513 is a wasteful number, since it uses less digits than its factorization.

168489513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189 (or 8186 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 168489513 is about 12980.3510353149. The cubic root of 168489513 is about 552.3202399032.

The spelling of 168489513 in words is "one hundred sixty-eight million, four hundred eighty-nine thousand, five hundred thirteen".