195511616 has 28 divisors (see below), whose sum is σ = 397436340. Its totient is φ = 95370240.

The previous prime is 195511607. The next prime is 195511627. The reversal of 195511616 is 616115591.

It can be written as a sum of positive squares in 2 ways, for example, as 20214016 + 175297600 = 4496^2 + 13240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34631 + ... + 39878.

It is an arithmetic number, because the mean of its divisors is an integer number (14194155).

Almost surely, 2^195511616 is an apocalyptic number.

195511616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

195511616 is an abundant number, since it is smaller than the sum of its proper divisors (201924724).

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

195511616 is an equidigital number, since it uses as much as digits as its factorization.

195511616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74562 (or 74552 counting only the distinct ones).

The product of its digits is 8100, while the sum is 35.

The square root of 195511616 is about 13982.5468352514. The cubic root of 195511616 is about 580.3957030195.

The spelling of 195511616 in words is "one hundred ninety-five million, five hundred eleven thousand, six hundred sixteen".