195641908 has 72 divisors (see below), whose sum is σ = 439193664. Its totient is φ = 75398400.

The previous prime is 195641893. The next prime is 195641923. The reversal of 195641908 is 809146591.

It is an interprime number because it is at equal distance from previous prime (195641893) and next prime (195641923).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221628 + ... + 222508.

It is an arithmetic number, because the mean of its divisors is an integer number (6099912).

Almost surely, 2^195641908 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 195641908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219596832).

195641908 is an abundant number, since it is smaller than the sum of its proper divisors (243551756).

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

195641908 is a wasteful number, since it uses less digits than its factorization.

195641908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 195641908 is about 13987.2051532821. The cubic root of 195641908 is about 580.5246026494.

The spelling of 195641908 in words is "one hundred ninety-five million, six hundred forty-one thousand, nine hundred eight".