195666411 has 8 divisors (see below), whose sum is σ = 263820240. Its totient is φ = 128978432.

The previous prime is 195666409. The next prime is 195666433. The reversal of 195666411 is 114666591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195666411 - 2¹ = 195666409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195666411.

It is not an unprimeable number, because it can be changed into a prime (195667411) 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, 366150 + ... + 366683.

It is an arithmetic number, because the mean of its divisors is an integer number (32977530).

Almost surely, 2^195666411 is an apocalyptic number.

195666411 is a deficient number, since it is larger than the sum of its proper divisors (68153829).

195666411 is an equidigital number, since it uses as much as digits as its factorization.

195666411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732925.

The product of its digits is 38880, while the sum is 39.

The square root of 195666411 is about 13988.0810335085. The cubic root of 195666411 is about 580.5488374034.

The spelling of 195666411 in words is "one hundred ninety-five million, six hundred sixty-six thousand, four hundred eleven".