195049930 has 16 divisors (see below), whose sum is σ = 351295560. Its totient is φ = 77974272.

The previous prime is 195049909. The next prime is 195049937. The reversal of 195049930 is 39940591.

It can be written as a sum of positive squares in 4 ways, for example, as 194853681 + 196249 = 13959^2 + 443^2 .

It is not an unprimeable number, because it can be changed into a prime (195049937) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16222 + ... + 25558.

Almost surely, 2^195049930 is an apocalyptic number.

195049930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195049930 is a deficient number, since it is larger than the sum of its proper divisors (156245630).

195049930 is a wasteful number, since it uses less digits than its factorization.

195049930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 195049930 is about 13966.0277101257. The cubic root of 195049930 is about 579.9384893151.

The spelling of 195049930 in words is "one hundred ninety-five million, forty-nine thousand, nine hundred thirty".