195388634 has 48 divisors (see below), whose sum is σ = 359468928. Its totient is φ = 77851488.

The previous prime is 195388621. The next prime is 195388637. The reversal of 195388634 is 436883591.

Its product of digits (622080) is a multiple of the sum of its prime divisors (192).

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (195388637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1826009 + ... + 1826115.

It is an arithmetic number, because the mean of its divisors is an integer number (7488936).

Almost surely, 2^195388634 is an apocalyptic number.

195388634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

195388634 is a deficient number, since it is larger than the sum of its proper divisors (164080294).

195388634 is a wasteful number, since it uses less digits than its factorization.

195388634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 192 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 195388634 is about 13978.1484467722. The cubic root of 195388634 is about 580.2739827226.

The spelling of 195388634 in words is "one hundred ninety-five million, three hundred eighty-eight thousand, six hundred thirty-four".