162198901 has 2 divisors, whose sum is σ = 162198902. Its totient is φ = 162198900.

The previous prime is 162198899. The next prime is 162198923. The reversal of 162198901 is 109891261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81468676 + 80730225 = 9026^2 + 8985^2 .

It is an emirp because it is prime and its reverse (109891261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162198901 - 2¹ = 162198899 is a prime.

Together with 162198899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162198401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81099450 + 81099451.

It is an arithmetic number, because the mean of its divisors is an integer number (81099451).

Almost surely, 2^162198901 is an apocalyptic number.

It is an amenable number.

162198901 is a deficient number, since it is larger than the sum of its proper divisors (1).

162198901 is an equidigital number, since it uses as much as digits as its factorization.

162198901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 162198901 is about 12735.7332337012. The cubic root of 162198901 is about 545.3591897544.

The spelling of 162198901 in words is "one hundred sixty-two million, one hundred ninety-eight thousand, nine hundred one".