162410821 has 2 divisors, whose sum is σ = 162410822. Its totient is φ = 162410820.

The previous prime is 162410819. The next prime is 162410827. The reversal of 162410821 is 128014261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160934596 + 1476225 = 12686^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 162410821 - 2¹ = 162410819 is a prime.

Together with 162410819, 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 (162410827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81205410 + 81205411.

It is an arithmetic number, because the mean of its divisors is an integer number (81205411).

Almost surely, 2^162410821 is an apocalyptic number.

It is an amenable number.

162410821 is a deficient number, since it is larger than the sum of its proper divisors (1).

162410821 is an equidigital number, since it uses as much as digits as its factorization.

162410821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 162410821 is about 12744.0504157823. The cubic root of 162410821 is about 545.5965983142.

The spelling of 162410821 in words is "one hundred sixty-two million, four hundred ten thousand, eight hundred twenty-one".