1612168541 has 2 divisors, whose sum is σ = 1612168542. Its totient is φ = 1612168540.

The previous prime is 1612168507. The next prime is 1612168561. The reversal of 1612168541 is 1458612161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948024100 + 664144441 = 30790^2 + 25771^2 .

It is an emirp because it is prime and its reverse (1458612161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1612168541 - 2³⁰ = 538426717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612168501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806084270 + 806084271.

It is an arithmetic number, because the mean of its divisors is an integer number (806084271).

Almost surely, 2^1612168541 is an apocalyptic number.

It is an amenable number.

1612168541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612168541 is an equidigital number, since it uses as much as digits as its factorization.

1612168541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 1612168541 is about 40151.8186512143. The cubic root of 1612168541 is about 1172.5646958693.

The spelling of 1612168541 in words is "one billion, six hundred twelve million, one hundred sixty-eight thousand, five hundred forty-one".