196623956929 has 3 divisors (see below), whose sum is σ = 196624400353. Its totient is φ = 196623513506.

The previous prime is 196623956869. The next prime is 196623956941. The reversal of 196623956929 is 929659326691.

The square root of 196623956929 is 443423.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 929659326691 = 61 ⋅15240316831.

It is not a de Polignac number, because 196623956929 - 2¹⁷ = 196623825857 is a prime.

It is a super-2 number, since 2×196623956929² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196623156929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 221712 + ... + 665134.

Almost surely, 2^196623956929 is an apocalyptic number.

196623956929 is the 443423-rd square number.

196623956929 is the 221712-nd centered octagonal number.

It is an amenable number.

196623956929 is a deficient number, since it is larger than the sum of its proper divisors (443424).

196623956929 is an frugal number, since it uses more digits than its factorization.

196623956929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886846 (or 443423 counting only the distinct ones).

The product of its digits is 85030560, while the sum is 67.

The spelling of 196623956929 in words is "one hundred ninety-six billion, six hundred twenty-three million, nine hundred fifty-six thousand, nine hundred twenty-nine".