169281001 has 2 divisors, whose sum is σ = 169281002. Its totient is φ = 169281000.

The previous prime is 169280983. The next prime is 169281029. The reversal of 169281001 is 100182961.

It is a happy number.

It is an a-pointer prime, because the next prime (169281029) can be obtained adding 169281001 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166797225 + 2483776 = 12915^2 + 1576^2 .

It is an emirp because it is prime and its reverse (100182961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169281001 - 2¹¹ = 169278953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (169281041) 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, 84640500 + 84640501.

It is an arithmetic number, because the mean of its divisors is an integer number (84640501).

Almost surely, 2^169281001 is an apocalyptic number.

It is an amenable number.

169281001 is a deficient number, since it is larger than the sum of its proper divisors (1).

169281001 is an equidigital number, since it uses as much as digits as its factorization.

169281001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 169281001 is about 13010.8032419217. The cubic root of 169281001 is about 553.1837399437.

The spelling of 169281001 in words is "one hundred sixty-nine million, two hundred eighty-one thousand, one".