196963813 has 4 divisors (see below), whose sum is σ = 197143488. Its totient is φ = 196784140.

The previous prime is 196963777. The next prime is 196963817. The reversal of 196963813 is 318369691.

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.

It is a cyclic number.

It is not a de Polignac number, because 196963813 - 2¹³ = 196955621 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196963817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88183 + ... + 90388.

It is an arithmetic number, because the mean of its divisors is an integer number (49285872).

Almost surely, 2^196963813 is an apocalyptic number.

It is an amenable number.

196963813 is a deficient number, since it is larger than the sum of its proper divisors (179675).

196963813 is a wasteful number, since it uses less digits than its factorization.

196963813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179674.

The product of its digits is 209952, while the sum is 46.

The square root of 196963813 is about 14034.3796799146. The cubic root of 196963813 is about 581.8291569182.

The spelling of 196963813 in words is "one hundred ninety-six million, nine hundred sixty-three thousand, eight hundred thirteen".