195168090 has 32 divisors (see below), whose sum is σ = 504435456. Its totient is φ = 48041280.

The previous prime is 195168089. The next prime is 195168091. The reversal of 195168090 is 90861591.

It is an interprime number because it is at equal distance from previous prime (195168089) and next prime (195168091).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (195168091) 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 15 ways as a sum of consecutive naturals, for example, 249826 + ... + 250605.

It is an arithmetic number, because the mean of its divisors is an integer number (15763608).

Almost surely, 2^195168090 is an apocalyptic number.

195168090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195168090 is an abundant number, since it is smaller than the sum of its proper divisors (309267366).

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

195168090 is a wasteful number, since it uses less digits than its factorization.

195168090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500454.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 195168090 is about 13970.2573347809. The cubic root of 195168090 is about 580.0555733512.

The spelling of 195168090 in words is "one hundred ninety-five million, one hundred sixty-eight thousand, ninety".