162688441 has 2 divisors, whose sum is σ = 162688442. Its totient is φ = 162688440.

The previous prime is 162688439. The next prime is 162688447. The reversal of 162688441 is 144886261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145082025 + 17606416 = 12045^2 + 4196^2 .

It is a cyclic number.

It is not a de Polignac number, because 162688441 - 2¹ = 162688439 is a prime.

Together with 162688439, 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 = 162688394 and 162688403.

It is not a weakly prime, because it can be changed into another prime (162688447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81344220 + 81344221.

It is an arithmetic number, because the mean of its divisors is an integer number (81344221).

Almost surely, 2^162688441 is an apocalyptic number.

It is an amenable number.

162688441 is a deficient number, since it is larger than the sum of its proper divisors (1).

162688441 is an equidigital number, since it uses as much as digits as its factorization.

162688441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 40.

The square root of 162688441 is about 12754.9379065521. The cubic root of 162688441 is about 545.9072966272.

The spelling of 162688441 in words is "one hundred sixty-two million, six hundred eighty-eight thousand, four hundred forty-one".