195693408 has 120 divisors (see below), whose sum is σ = 581909328. Its totient is φ = 64509696.

The previous prime is 195693401. The next prime is 195693419. The reversal of 195693408 is 804396591.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195693401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 266610 + ... + 267342.

Almost surely, 2^195693408 is an apocalyptic number.

195693408 is a gapful number since it is divisible by the number (18) 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 195693408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290954664).

195693408 is an abundant number, since it is smaller than the sum of its proper divisors (386215920).

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

195693408 is a wasteful number, since it uses less digits than its factorization.

195693408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 195693408 is about 13989.0460003533. The cubic root of 195693408 is about 580.5755365119.

The spelling of 195693408 in words is "one hundred ninety-five million, six hundred ninety-three thousand, four hundred eight".