166319616 has 160 divisors (see below), whose sum is σ = 481219200. Its totient is φ = 50872320.

The previous prime is 166319599. The next prime is 166319617. The reversal of 166319616 is 616913661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166319617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1196475 + ... + 1196613.

It is an arithmetic number, because the mean of its divisors is an integer number (3007620).

Almost surely, 2^166319616 is an apocalyptic number.

166319616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166319616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240609600).

166319616 is an abundant number, since it is smaller than the sum of its proper divisors (314899584).

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

166319616 is a wasteful number, since it uses less digits than its factorization.

166319616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 204 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 166319616 is about 12896.4962683668. The cubic root of 166319616 is about 549.9389640257.

The spelling of 166319616 in words is "one hundred sixty-six million, three hundred nineteen thousand, six hundred sixteen".