168503441 has 2 divisors, whose sum is σ = 168503442. Its totient is φ = 168503440.

The previous prime is 168503431. The next prime is 168503443. The reversal of 168503441 is 144305861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106172416 + 62331025 = 10304^2 + 7895^2 .

It is a cyclic number.

It is not a de Polignac number, because 168503441 - 2¹⁰ = 168502417 is a prime.

Together with 168503443, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 168503398 and 168503407.

It is not a weakly prime, because it can be changed into another prime (168503443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84251720 + 84251721.

It is an arithmetic number, because the mean of its divisors is an integer number (84251721).

Almost surely, 2^168503441 is an apocalyptic number.

It is an amenable number.

168503441 is a deficient number, since it is larger than the sum of its proper divisors (1).

168503441 is an equidigital number, since it uses as much as digits as its factorization.

168503441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 168503441 is about 12980.8875274382. The cubic root of 168503441 is about 552.3354584653.

The spelling of 168503441 in words is "one hundred sixty-eight million, five hundred three thousand, four hundred forty-one".