195139296 has 144 divisors (see below), whose sum is σ = 625218048. Its totient is φ = 57196800.

The previous prime is 195139283. The next prime is 195139313. The reversal of 195139296 is 692931591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 97215 + ... + 99201.

It is an arithmetic number, because the mean of its divisors is an integer number (4341792).

Almost surely, 2^195139296 is an apocalyptic number.

195139296 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 195139296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312609024).

195139296 is an abundant number, since it is smaller than the sum of its proper divisors (430078752).

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

195139296 is a wasteful number, since it uses less digits than its factorization.

195139296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2034 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 195139296 is about 13969.2267502536. The cubic root of 195139296 is about 580.0270459049.

It can be divided in two parts, 19 and 5139296, that added together give a palindrome (5139315).

The spelling of 195139296 in words is "one hundred ninety-five million, one hundred thirty-nine thousand, two hundred ninety-six".