195132890 has 16 divisors (see below), whose sum is σ = 354463560. Its totient is φ = 77336640.

The previous prime is 195132871. The next prime is 195132893. The reversal of 195132890 is 98231591.

It can be written as a sum of positive squares in 4 ways, for example, as 150283081 + 44849809 = 12259^2 + 6697^2 .

It is not an unprimeable number, because it can be changed into a prime (195132893) 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, 88421 + ... + 90600.

Almost surely, 2^195132890 is an apocalyptic number.

195132890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195132890 is a deficient number, since it is larger than the sum of its proper divisors (159330670).

195132890 is a wasteful number, since it uses less digits than its factorization.

195132890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179137.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 195132890 is about 13968.9974586582. The cubic root of 195132890 is about 580.0206988253.

The spelling of 195132890 in words is "one hundred ninety-five million, one hundred thirty-two thousand, eight hundred ninety".