195033640 has 32 divisors (see below), whose sum is σ = 447110280. Its totient is φ = 76540672.

The previous prime is 195033637. The next prime is 195033647. The reversal of 195033640 is 46330591.

It can be written as a sum of positive squares in 4 ways, for example, as 178436164 + 16597476 = 13358^2 + 4074^2 .

It is not an unprimeable number, because it can be changed into a prime (195033647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43879 + ... + 48118.

Almost surely, 2^195033640 is an apocalyptic number.

195033640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195033640 is an abundant number, since it is smaller than the sum of its proper divisors (252076640).

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

195033640 is a wasteful number, since it uses less digits than its factorization.

195033640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92061 (or 92057 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 195033640 is about 13965.4444970434. Note that the first 4 decimals coincide. The cubic root of 195033640 is about 579.9223439432.

The spelling of 195033640 in words is "one hundred ninety-five million, thirty-three thousand, six hundred forty".