160991922 has 64 divisors (see below), whose sum is σ = 400861440. Its totient is φ = 41969664.

The previous prime is 160991911. The next prime is 160991923. The reversal of 160991922 is 229199061.

160991922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (160991923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46938 + ... + 50250.

It is an arithmetic number, because the mean of its divisors is an integer number (6263460).

Almost surely, 2^160991922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 160991922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200430720).

160991922 is an abundant number, since it is smaller than the sum of its proper divisors (239869518).

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

160991922 is a wasteful number, since it uses less digits than its factorization.

160991922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 160991922 is about 12688.2592186635. The cubic root of 160991922 is about 544.0030839827.

The spelling of 160991922 in words is "one hundred sixty million, nine hundred ninety-one thousand, nine hundred twenty-two".