168645016 has 32 divisors (see below), whose sum is σ = 332040960. Its totient is φ = 80147232.

The previous prime is 168644999. The next prime is 168645031. The reversal of 168645016 is 610546861.

It is a super-2 number, since 2×168645016² = 56882282843280512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27181 + ... + 32803.

It is an arithmetic number, because the mean of its divisors is an integer number (10376280).

Almost surely, 2^168645016 is an apocalyptic number.

168645016 is the 7498-th octagonal number.

It is an amenable number.

168645016 is a deficient number, since it is larger than the sum of its proper divisors (163395944).

168645016 is a wasteful number, since it uses less digits than its factorization.

168645016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 168645016 is about 12986.3395920483. The cubic root of 168645016 is about 552.4901041750.

The spelling of 168645016 in words is "one hundred sixty-eight million, six hundred forty-five thousand, sixteen".