196498044961 has 3 divisors (see below), whose sum is σ = 196498488243. Its totient is φ = 196497601680.

The previous prime is 196498044929. The next prime is 196498045013. The reversal of 196498044961 is 169440894691.

The square root of 196498044961 is 443281.

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: 169440894691 = 263 ⋅644261957.

It can be written as a sum of positive squares in only one way, i.e., 143247867361 + 53250177600 = 378481^2 + 230760^2 .

It is not a de Polignac number, because 196498044961 - 2⁵ = 196498044929 is a prime.

It is a super-2 number, since 2×196498044961² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196498044961.

It is not an unprimeable number, because it can be changed into a prime (196498044901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 221641 + ... + 664921.

It is an arithmetic number, because the mean of its divisors is an integer number (65499496081).

Almost surely, 2^196498044961 is an apocalyptic number.

196498044961 is the 443281-st square number.

196498044961 is the 221641-st centered octagonal number.

It is an amenable number.

196498044961 is a deficient number, since it is larger than the sum of its proper divisors (443282).

196498044961 is an frugal number, since it uses more digits than its factorization.

196498044961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886562 (or 443281 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 196498044961 in words is "one hundred ninety-six billion, four hundred ninety-eight million, forty-four thousand, nine hundred sixty-one".