161169120 has 288 divisors, whose sum is σ = 641571840. Its totient is φ = 36080640.

The previous prime is 161169109. The next prime is 161169133. The reversal of 161169120 is 21961161.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 594585 + ... + 594855.

It is an arithmetic number, because the mean of its divisors is an integer number (2227680).

Almost surely, 2^161169120 is an apocalyptic number.

161169120 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 161169120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320785920).

161169120 is an abundant number, since it is smaller than the sum of its proper divisors (480402720).

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

161169120 is a wasteful number, since it uses less digits than its factorization.

161169120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 161169120 is about 12695.2400528702. The cubic root of 161169120 is about 544.2025989899.

The spelling of 161169120 in words is "one hundred sixty-one million, one hundred sixty-nine thousand, one hundred twenty".