3198161 has 2 divisors, whose sum is σ = 3198162. Its totient is φ = 3198160.

The previous prime is 3198133. The next prime is 3198163. The reversal of 3198161 is 1618913.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2085136 + 1113025 = 1444^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 3198161 - 2¹⁰ = 3197137 is a prime.

Together with 3198163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3198163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599080 + 1599081.

It is an arithmetic number, because the mean of its divisors is an integer number (1599081).

Almost surely, 2^3198161 is an apocalyptic number.

It is an amenable number.

3198161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3198161 is an equidigital number, since it uses as much as digits as its factorization.

3198161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 29.

The square root of 3198161 is about 1788.3402920026. The cubic root of 3198161 is about 147.3330256449. Note that the first 3 decimals are identical.

The spelling of 3198161 in words is "three million, one hundred ninety-eight thousand, one hundred sixty-one".