195609408 has 168 divisors, whose sum is σ = 576986400. Its totient is φ = 58254336.

The previous prime is 195609383. The next prime is 195609433. The reversal of 195609408 is 804906591.

It is an interprime number because it is at equal distance from previous prime (195609383) and next prime (195609433).

It is a super-2 number, since 2×195609408² = 76526080996220928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195609408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4549035 + ... + 4549077.

Almost surely, 2^195609408 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 195609408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288493200).

195609408 is an abundant number, since it is smaller than the sum of its proper divisors (381376992).

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

195609408 is a wasteful number, since it uses less digits than its factorization.

195609408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 195609408 is about 13986.0433289762. The cubic root of 195609408 is about 580.4924553203.

The spelling of 195609408 in words is "one hundred ninety-five million, six hundred nine thousand, four hundred eight".