160991100 has 108 divisors (see below), whose sum is σ = 509404896. Its totient is φ = 42524160.

The previous prime is 160991087. The next prime is 160991111. The reversal of 160991100 is 1199061.

160991100 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 100909 + ... + 102491.

It is an arithmetic number, because the mean of its divisors is an integer number (4716712).

Almost surely, 2^160991100 is an apocalyptic number.

160991100 is a gapful number since it is divisible by the number (10) 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 160991100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254702448).

160991100 is an abundant number, since it is smaller than the sum of its proper divisors (348413796).

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

160991100 is a wasteful number, since it uses less digits than its factorization.

160991100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 160991100 is about 12688.2268264719. The cubic root of 160991100 is about 544.0021581157.

The spelling of 160991100 in words is "one hundred sixty million, nine hundred ninety-one thousand, one hundred".