195640556 has 24 divisors (see below), whose sum is σ = 364558320. Its totient is φ = 91546112.

The previous prime is 195640541. The next prime is 195640559. The reversal of 195640556 is 655046591.

It is not an unprimeable number, because it can be changed into a prime (195640559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (15189930).

Almost surely, 2^195640556 is an apocalyptic number.

It is an amenable number.

195640556 is a deficient number, since it is larger than the sum of its proper divisors (168917764).

195640556 is a wasteful number, since it uses less digits than its factorization.

195640556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16273 (or 16271 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 195640556 is about 13987.1568233147. The cubic root of 195640556 is about 580.5232653915.

The spelling of 195640556 in words is "one hundred ninety-five million, six hundred forty thousand, five hundred fifty-six".