195209940 has 24 divisors (see below), whose sum is σ = 546588000. Its totient is φ = 52055968.

The previous prime is 195209939. The next prime is 195209977. The reversal of 195209940 is 49902591.

195209940 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626690 + ... + 1626809.

It is an arithmetic number, because the mean of its divisors is an integer number (22774500).

Almost surely, 2^195209940 is an apocalyptic number.

195209940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195209940 is an abundant number, since it is smaller than the sum of its proper divisors (351378060).

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

195209940 is a wasteful number, since it uses less digits than its factorization.

195209940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253511 (or 3253509 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 195209940 is about 13971.7550794451. The cubic root of 195209940 is about 580.0970309324.

The spelling of 195209940 in words is "one hundred ninety-five million, two hundred nine thousand, nine hundred forty".