195849681 has 16 divisors (see below), whose sum is σ = 267494400. Its totient is φ = 127412480.

The previous prime is 195849671. The next prime is 195849713. The reversal of 195849681 is 186948591.

It is a cyclic number.

It is not a de Polignac number, because 195849681 - 2⁶ = 195849617 is a prime.

It is a super-2 number, since 2×195849681² = 76714195095603522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195849671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27145 + ... + 33593.

It is an arithmetic number, because the mean of its divisors is an integer number (16718400).

Almost surely, 2^195849681 is an apocalyptic number.

It is an amenable number.

195849681 is a deficient number, since it is larger than the sum of its proper divisors (71644719).

195849681 is a wasteful number, since it uses less digits than its factorization.

195849681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696.

The product of its digits is 622080, while the sum is 51.

The square root of 195849681 is about 13994.6304345631. The cubic root of 195849681 is about 580.7300369313.

The spelling of 195849681 in words is "one hundred ninety-five million, eight hundred forty-nine thousand, six hundred eighty-one".