168091648 has 84 divisors (see below), whose sum is σ = 362129832. Its totient is φ = 77987840.

The previous prime is 168091607. The next prime is 168091657. The reversal of 168091648 is 846190861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2367453 + ... + 2367523.

Almost surely, 2^168091648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168091648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181064916).

168091648 is an abundant number, since it is smaller than the sum of its proper divisors (194038184).

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

168091648 is an frugal number, since it uses more digits than its factorization.

168091648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 168091648 is about 12965.0163131405. The cubic root of 168091648 is about 551.8851542914.

The spelling of 168091648 in words is "one hundred sixty-eight million, ninety-one thousand, six hundred forty-eight".