195799747 has 8 divisors (see below), whose sum is σ = 230030640. Its totient is φ = 164307360.

The previous prime is 195799741. The next prime is 195799763. The reversal of 195799747 is 747997591.

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 195799747 - 2²⁷ = 61582019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195799691 and 195799700.

It is not an unprimeable number, because it can be changed into a prime (195799741) 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, 684472 + ... + 684757.

It is an arithmetic number, because the mean of its divisors is an integer number (28753830).

Almost surely, 2^195799747 is an apocalyptic number.

195799747 is a deficient number, since it is larger than the sum of its proper divisors (34230893).

195799747 is a wasteful number, since it uses less digits than its factorization.

195799747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369253.

The product of its digits is 5000940, while the sum is 58.

The square root of 195799747 is about 13992.8462794386. The cubic root of 195799747 is about 580.6806782628.

The spelling of 195799747 in words is "one hundred ninety-five million, seven hundred ninety-nine thousand, seven hundred forty-seven".