195843940 has 24 divisors (see below), whose sum is σ = 412151040. Its totient is φ = 78170208.

The previous prime is 195843937. The next prime is 195843943. The reversal of 195843940 is 49348591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (195843937) and next prime (195843943).

It is not an unprimeable number, because it can be changed into a prime (195843943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (17172960).

Almost surely, 2^195843940 is an apocalyptic number.

195843940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195843940 is an abundant number, since it is smaller than the sum of its proper divisors (216307100).

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

195843940 is a wasteful number, since it uses less digits than its factorization.

195843940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20931 (or 20929 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 195843940 is about 13994.4253186760. The cubic root of 195843940 is about 580.7243625051.

The spelling of 195843940 in words is "one hundred ninety-five million, eight hundred forty-three thousand, nine hundred forty".