196737489601 has 3 divisors (see below), whose sum is σ = 196737933153. Its totient is φ = 196737046050.

The previous prime is 196737489593. The next prime is 196737489667. The reversal of 196737489601 is 106984737691.

The square root of 196737489601 is 443551.

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.

It is not a de Polignac number, because 196737489601 - 2³ = 196737489593 is a prime.

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 196737489601.

It is not an unprimeable number, because it can be changed into a prime (196737489691) 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, 221776 + ... + 665326.

It is an arithmetic number, because the mean of its divisors is an integer number (65579311051).

Almost surely, 2^196737489601 is an apocalyptic number.

196737489601 is the 443551-st square number.

196737489601 is the 221776-th centered octagonal number.

It is an amenable number.

196737489601 is a deficient number, since it is larger than the sum of its proper divisors (443552).

196737489601 is an frugal number, since it uses more digits than its factorization.

196737489601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887102 (or 443551 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 196737489601 in words is "one hundred ninety-six billion, seven hundred thirty-seven million, four hundred eighty-nine thousand, six hundred one".