196511961 has 8 divisors (see below), whose sum is σ = 262190880. Its totient is φ = 130920512.

The previous prime is 196511957. The next prime is 196511981. The reversal of 196511961 is 169115691.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196511961 - 2² = 196511957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196511941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16431 + ... + 25748.

It is an arithmetic number, because the mean of its divisors is an integer number (32773860).

Almost surely, 2^196511961 is an apocalyptic number.

It is an amenable number.

196511961 is a deficient number, since it is larger than the sum of its proper divisors (65678919).

196511961 is a wasteful number, since it uses less digits than its factorization.

196511961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43735.

The product of its digits is 14580, while the sum is 39.

The square root of 196511961 is about 14018.2723971251. The cubic root of 196511961 is about 581.3838941399.

It can be divided in two parts, 19651 and 1961, that added together give a palindrome (21612).

The spelling of 196511961 in words is "one hundred ninety-six million, five hundred eleven thousand, nine hundred sixty-one".