195881630 has 32 divisors (see below), whose sum is σ = 408487104. Its totient is φ = 66237696.

The previous prime is 195881629. The next prime is 195881671. The reversal of 195881630 is 36188591.

It is a super-2 number, since 2×195881630² = 76739225942913800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 14057 + ... + 24276.

It is an arithmetic number, because the mean of its divisors is an integer number (12765222).

Almost surely, 2^195881630 is an apocalyptic number.

195881630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195881630 is an abundant number, since it is smaller than the sum of its proper divisors (212605474).

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

195881630 is a wasteful number, since it uses less digits than its factorization.

195881630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38420.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 195881630 is about 13995.7718615302. The cubic root of 195881630 is about 580.7616134191.

The spelling of 195881630 in words is "one hundred ninety-five million, eight hundred eighty-one thousand, six hundred thirty".