161888076 has 288 divisors, whose sum is σ = 543449088. Its totient is φ = 39536640.

The previous prime is 161888071. The next prime is 161888123. The reversal of 161888076 is 670888161.

161888076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161888071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3054466 + ... + 3054518.

It is an arithmetic number, because the mean of its divisors is an integer number (1886976).

Almost surely, 2^161888076 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 161888076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271724544).

161888076 is an abundant number, since it is smaller than the sum of its proper divisors (381561012).

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

161888076 is a wasteful number, since it uses less digits than its factorization.

161888076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 161888076 is about 12723.5245117067. The cubic root of 161888076 is about 545.0106060838.

The spelling of 161888076 in words is "one hundred sixty-one million, eight hundred eighty-eight thousand, seventy-six".