169842894401 has 4 divisors (see below), whose sum is σ = 169886258772. Its totient is φ = 169799530032.

The previous prime is 169842894359. The next prime is 169842894443. The reversal of 169842894401 is 104498248961.

169842894401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 412120²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104498248961 = 1931 ⋅54116131.

It is an interprime number because it is at equal distance from previous prime (169842894359) and next prime (169842894443).

It can be written as a sum of positive squares in 2 ways, for example, as 137549007376 + 32293887025 = 370876^2 + 179705^2 .

It is a cyclic number.

It is not a de Polignac number, because 169842894401 - 2⁶ = 169842894337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (169842894901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21676310 + ... + 21684143.

It is an arithmetic number, because the mean of its divisors is an integer number (42471564693).

Almost surely, 2^169842894401 is an apocalyptic number.

It is an amenable number.

169842894401 is a deficient number, since it is larger than the sum of its proper divisors (43364371).

169842894401 is an equidigital number, since it uses as much as digits as its factorization.

169842894401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43364370.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 169842894401 in words is "one hundred sixty-nine billion, eight hundred forty-two million, eight hundred ninety-four thousand, four hundred one".