195668740 has 48 divisors (see below), whose sum is σ = 416707200. Its totient is φ = 77172480.

The previous prime is 195668731. The next prime is 195668777. The reversal of 195668740 is 47866591.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839664 + ... + 839896.

It is an arithmetic number, because the mean of its divisors is an integer number (8681400).

Almost surely, 2^195668740 is an apocalyptic number.

195668740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195668740 is an abundant number, since it is smaller than the sum of its proper divisors (221038460).

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

195668740 is a wasteful number, since it uses less digits than its factorization.

195668740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 195668740 is about 13988.1642827070. The cubic root of 195668740 is about 580.5511408015.

The spelling of 195668740 in words is "one hundred ninety-five million, six hundred sixty-eight thousand, seven hundred forty".