169681316 has 18 divisors (see below), whose sum is σ = 345423078. Its totient is φ = 72720480.

The previous prime is 169681307. The next prime is 169681339. The reversal of 169681316 is 613186961.

It can be written as a sum of positive squares in only one way, i.e., 165894400 + 3786916 = 12880^2 + 1946^2 .

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 5 ways as a sum of consecutive naturals, for example, 432665 + ... + 433056.

It is an arithmetic number, because the mean of its divisors is an integer number (19190171).

Almost surely, 2^169681316 is an apocalyptic number.

It is an amenable number.

169681316 is an abundant number, since it is smaller than the sum of its proper divisors (175741762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169681316 is a wasteful number, since it uses less digits than its factorization.

169681316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865739 (or 865730 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 169681316 is about 13026.1781041102. The cubic root of 169681316 is about 553.6194521952.

The spelling of 169681316 in words is "one hundred sixty-nine million, six hundred eighty-one thousand, three hundred sixteen".