196951971 has 8 divisors (see below), whose sum is σ = 267053760. Its totient is φ = 129075752.

The previous prime is 196951961. The next prime is 196951973. The reversal of 196951971 is 179159691.

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 196951971 - 2⁵ = 196951939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196951971.

It is not an unprimeable number, because it can be changed into a prime (196951973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556185 + ... + 556538.

It is an arithmetic number, because the mean of its divisors is an integer number (33381720).

Almost surely, 2^196951971 is an apocalyptic number.

196951971 is a deficient number, since it is larger than the sum of its proper divisors (70101789).

196951971 is a wasteful number, since it uses less digits than its factorization.

196951971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112785.

The product of its digits is 153090, while the sum is 48.

The square root of 196951971 is about 14033.9577810395. The cubic root of 196951971 is about 581.8174963008.

The spelling of 196951971 in words is "one hundred ninety-six million, nine hundred fifty-one thousand, nine hundred seventy-one".