162166541 has 2 divisors, whose sum is σ = 162166542. Its totient is φ = 162166540.

The previous prime is 162166531. The next prime is 162166559. The reversal of 162166541 is 145661261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 5541316 = 12515^2 + 2354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162166541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162166498 and 162166507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162166531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81083270 + 81083271.

It is an arithmetic number, because the mean of its divisors is an integer number (81083271).

Almost surely, 2^162166541 is an apocalyptic number.

It is an amenable number.

162166541 is a deficient number, since it is larger than the sum of its proper divisors (1).

162166541 is an equidigital number, since it uses as much as digits as its factorization.

162166541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 162166541 is about 12734.4627291457. The cubic root of 162166541 is about 545.3229194775.

The spelling of 162166541 in words is "one hundred sixty-two million, one hundred sixty-six thousand, five hundred forty-one".