169536481 has 2 divisors, whose sum is σ = 169536482. Its totient is φ = 169536480.

The previous prime is 169536457. The next prime is 169536509. The reversal of 169536481 is 184635961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 23126481 = 12100^2 + 4809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169536481 is a prime.

It is a super-2 number, since 2×169536481² = 57485236779726722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (169536421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84768240 + 84768241.

It is an arithmetic number, because the mean of its divisors is an integer number (84768241).

Almost surely, 2^169536481 is an apocalyptic number.

It is an amenable number.

169536481 is a deficient number, since it is larger than the sum of its proper divisors (1).

169536481 is an equidigital number, since it uses as much as digits as its factorization.

169536481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 169536481 is about 13020.6175352784. The cubic root of 169536481 is about 553.4618895750.

The spelling of 169536481 in words is "one hundred sixty-nine million, five hundred thirty-six thousand, four hundred eighty-one".