161797088 has 48 divisors (see below), whose sum is σ = 333849600. Its totient is φ = 77041536.

The previous prime is 161797087. The next prime is 161797123. The reversal of 161797088 is 880797161.

161797088 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161797087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269813 + ... + 270411.

It is an arithmetic number, because the mean of its divisors is an integer number (6955200).

Almost surely, 2^161797088 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 161797088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166924800).

161797088 is an abundant number, since it is smaller than the sum of its proper divisors (172052512).

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

161797088 is a wasteful number, since it uses less digits than its factorization.

161797088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 161797088 is about 12719.9484275684. The cubic root of 161797088 is about 544.9084805503.

The spelling of 161797088 in words is "one hundred sixty-one million, seven hundred ninety-seven thousand, eighty-eight".