195033649 has 4 divisors (see below), whose sum is σ = 197383536. Its totient is φ = 192683764.

The previous prime is 195033647. The next prime is 195033659. The reversal of 195033649 is 946330591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 946330591 = 113 ⋅8374607.

It is a cyclic number.

It is not a de Polignac number, because 195033649 - 2¹ = 195033647 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195033647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174819 + ... + 1174984.

It is an arithmetic number, because the mean of its divisors is an integer number (49345884).

Almost surely, 2^195033649 is an apocalyptic number.

It is an amenable number.

195033649 is a deficient number, since it is larger than the sum of its proper divisors (2349887).

195033649 is an equidigital number, since it uses as much as digits as its factorization.

195033649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349886.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 195033649 is about 13965.4448192673. Note that the first 3 decimals coincide. The cubic root of 195033649 is about 579.9223528635.

The spelling of 195033649 in words is "one hundred ninety-five million, thirty-three thousand, six hundred forty-nine".