196229681 has 4 divisors (see below), whose sum is σ = 196297332. Its totient is φ = 196162032.

The previous prime is 196229647. The next prime is 196229687. The reversal of 196229681 is 186922691.

196229681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114490000 + 81739681 = 10700^2 + 9041^2 .

It is a cyclic number.

It is not a de Polignac number, because 196229681 - 2⁶ = 196229617 is a prime.

It is a super-2 number, since 2×196229681² = 77012175410723522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196229687) 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, 29270 + ... + 35343.

It is an arithmetic number, because the mean of its divisors is an integer number (49074333).

Almost surely, 2^196229681 is an apocalyptic number.

It is an amenable number.

196229681 is a deficient number, since it is larger than the sum of its proper divisors (67651).

196229681 is an equidigital number, since it uses as much as digits as its factorization.

196229681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67650.

The product of its digits is 93312, while the sum is 44.

The square root of 196229681 is about 14008.2004911409. The cubic root of 196229681 is about 581.1053840554.

The spelling of 196229681 in words is "one hundred ninety-six million, two hundred twenty-nine thousand, six hundred eighty-one".