195161616 has 320 divisors, whose sum is σ = 666624000. Its totient is φ = 54120960.

The previous prime is 195161579. The next prime is 195161623. The reversal of 195161616 is 616161591.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 3307795 + ... + 3307853.

It is an arithmetic number, because the mean of its divisors is an integer number (2083200).

Almost surely, 2^195161616 is an apocalyptic number.

195161616 is a gapful number since it is divisible by the number (16) 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 195161616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333312000).

195161616 is an abundant number, since it is smaller than the sum of its proper divisors (471462384).

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

195161616 is a wasteful number, since it uses less digits than its factorization.

195161616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 127 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 195161616 is about 13970.0256263187. The cubic root of 195161616 is about 580.0491595272.

The spelling of 195161616 in words is "one hundred ninety-five million, one hundred sixty-one thousand, six hundred sixteen".