195708890 has 32 divisors (see below), whose sum is σ = 391620096. Its totient is φ = 69929280.

The previous prime is 195708889. The next prime is 195708899. The reversal of 195708890 is 98807591.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195708899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20252 + ... + 28311.

It is an arithmetic number, because the mean of its divisors is an integer number (12238128).

Almost surely, 2^195708890 is an apocalyptic number.

195708890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195708890 is an abundant number, since it is smaller than the sum of its proper divisors (195911206).

195708890 is a wasteful number, since it uses less digits than its factorization.

195708890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48614.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 195708890 is about 13989.5993509464. The cubic root of 195708890 is about 580.5908465718.

The spelling of 195708890 in words is "one hundred ninety-five million, seven hundred eight thousand, eight hundred ninety".