196115971 has 2 divisors, whose sum is σ = 196115972. Its totient is φ = 196115970.

The previous prime is 196115957. The next prime is 196115977. The reversal of 196115971 is 179511691.

196115971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (179511691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196115971 - 2⁵ = 196115939 is a prime.

It is a super-2 number, since 2×196115971² = 76922948162545682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196115977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98057985 + 98057986.

It is an arithmetic number, because the mean of its divisors is an integer number (98057986).

Almost surely, 2^196115971 is an apocalyptic number.

196115971 is a deficient number, since it is larger than the sum of its proper divisors (1).

196115971 is an equidigital number, since it uses as much as digits as its factorization.

196115971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 40.

The square root of 196115971 is about 14004.1412089424. The cubic root of 196115971 is about 580.9931172118.

The spelling of 196115971 in words is "one hundred ninety-six million, one hundred fifteen thousand, nine hundred seventy-one".