195072866 has 8 divisors (see below), whose sum is σ = 293340204. Its totient is φ = 97292800.

The previous prime is 195072859. The next prime is 195072893. The reversal of 195072866 is 668270591.

It can be written as a sum of positive squares in 2 ways, for example, as 159491641 + 35581225 = 12629^2 + 5965^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120815 + ... + 122418.

Almost surely, 2^195072866 is an apocalyptic number.

195072866 is a deficient number, since it is larger than the sum of its proper divisors (98267338).

195072866 is a wasteful number, since it uses less digits than its factorization.

195072866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243636.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 195072866 is about 13966.8488214056. The cubic root of 195072866 is about 579.9612201579.

The spelling of 195072866 in words is "one hundred ninety-five million, seventy-two thousand, eight hundred sixty-six".