196949645 has 8 divisors (see below), whose sum is σ = 236496120. Its totient is φ = 157455360.

The previous prime is 196949639. The next prime is 196949647. The reversal of 196949645 is 546949691.

It can be written as a sum of positive squares in 4 ways, for example, as 16826404 + 180123241 = 4102^2 + 13421^2 .

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

It is not a de Polignac number, because 196949645 - 2⁴ = 196949629 is a prime.

It is a super-3 number, since 3×196949645³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196949647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4196 + ... + 20285.

It is an arithmetic number, because the mean of its divisors is an integer number (29562015).

Almost surely, 2^196949645 is an apocalyptic number.

It is an amenable number.

196949645 is a deficient number, since it is larger than the sum of its proper divisors (39546475).

196949645 is a wasteful number, since it uses less digits than its factorization.

196949645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26095.

The product of its digits is 2099520, while the sum is 53.

The square root of 196949645 is about 14033.8749103731. The cubic root of 196949645 is about 581.8152058730.

The spelling of 196949645 in words is "one hundred ninety-six million, nine hundred forty-nine thousand, six hundred forty-five".