195344890 has 32 divisors (see below), whose sum is σ = 398603520. Its totient is φ = 68330304.

The previous prime is 195344887. The next prime is 195344893. The reversal of 195344890 is 98443591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (195344887) and next prime (195344893).

It is a super-2 number, since 2×195344890² = 76319252098224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195344893) 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 15 ways as a sum of consecutive naturals, for example, 37074 + ... + 42013.

It is an arithmetic number, because the mean of its divisors is an integer number (12456360).

Almost surely, 2^195344890 is an apocalyptic number.

195344890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195344890 is an abundant number, since it is smaller than the sum of its proper divisors (203258630).

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

195344890 is a wasteful number, since it uses less digits than its factorization.

195344890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79126.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 195344890 is about 13976.5836312026. The cubic root of 195344890 is about 580.2306751888.

The spelling of 195344890 in words is "one hundred ninety-five million, three hundred forty-four thousand, eight hundred ninety".