196694779903 has 4 divisors (see below), whose sum is σ = 207047136760. Its totient is φ = 186342423048.

The previous prime is 196694779891. The next prime is 196694779909. The reversal of 196694779903 is 309977496691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196694779903 is a prime.

It is a super-2 number, since 2×196694779903² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196694779909) 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, 5176178400 + ... + 5176178437.

It is an arithmetic number, because the mean of its divisors is an integer number (51761784190).

Almost surely, 2^196694779903 is an apocalyptic number.

196694779903 is a deficient number, since it is larger than the sum of its proper divisors (10352356857).

196694779903 is a wasteful number, since it uses less digits than its factorization.

196694779903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10352356856.

The product of its (nonzero) digits is 138883248, while the sum is 70.

The spelling of 196694779903 in words is "one hundred ninety-six billion, six hundred ninety-four million, seven hundred seventy-nine thousand, nine hundred three".