1662206041 has 2 divisors, whose sum is σ = 1662206042. Its totient is φ = 1662206040.

The previous prime is 1662206027. The next prime is 1662206053. The reversal of 1662206041 is 1406022661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1239040000 + 423166041 = 35200^2 + 20571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662206041 - 2⁵ = 1662206009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662206011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831103020 + 831103021.

It is an arithmetic number, because the mean of its divisors is an integer number (831103021).

Almost surely, 2^1662206041 is an apocalyptic number.

It is an amenable number.

1662206041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662206041 is an equidigital number, since it uses as much as digits as its factorization.

1662206041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1662206041 is about 40770.1611598483. The cubic root of 1662206041 is about 1184.5724251579.

The spelling of 1662206041 in words is "one billion, six hundred sixty-two million, two hundred six thousand, forty-one".