195631018 has 32 divisors (see below), whose sum is σ = 334725120. Its totient is φ = 84942000.

The previous prime is 195631001. The next prime is 195631039. The reversal of 195631018 is 810136591.

195631018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52063 + ... + 55693.

It is an arithmetic number, because the mean of its divisors is an integer number (10460160).

Almost surely, 2^195631018 is an apocalyptic number.

195631018 is a deficient number, since it is larger than the sum of its proper divisors (139094102).

195631018 is a wasteful number, since it uses less digits than its factorization.

195631018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 195631018 is about 13986.8158635195. The cubic root of 195631018 is about 580.5138312179.

The spelling of 195631018 in words is "one hundred ninety-five million, six hundred thirty-one thousand, eighteen".