168974913 has 8 divisors (see below), whose sum is σ = 225412000. Its totient is φ = 112593888.

The previous prime is 168974891. The next prime is 168974947. The reversal of 168974913 is 319479861.

It is a happy number.

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

It is not a de Polignac number, because 168974913 - 2⁹ = 168974401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168974413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6388 + ... + 19461.

It is an arithmetic number, because the mean of its divisors is an integer number (28176500).

Almost surely, 2^168974913 is an apocalyptic number.

It is an amenable number.

168974913 is a deficient number, since it is larger than the sum of its proper divisors (56437087).

168974913 is a wasteful number, since it uses less digits than its factorization.

168974913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28031.

The product of its digits is 326592, while the sum is 48.

The square root of 168974913 is about 12999.0350795742. The cubic root of 168974913 is about 552.8501229384.

The spelling of 168974913 in words is "one hundred sixty-eight million, nine hundred seventy-four thousand, nine hundred thirteen".