1606423120849 has 16 divisors (see below), whose sum is σ = 1702263504528. Its totient is φ = 1510732726272.

The previous prime is 1606423120829. The next prime is 1606423120853. The reversal of 1606423120849 is 9480213246061.

It can be written as a sum of positive squares in 8 ways, for example, as 363349756225 + 1243073364624 = 602785^2 + 1114932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606423120849 - 2¹¹ = 1606423118801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1606423120799 and 1606423120808.

It is not an unprimeable number, because it can be changed into a prime (1606423120829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138276289 + ... + 138287905.

It is an arithmetic number, because the mean of its divisors is an integer number (106391469033).

Almost surely, 2^{1606423120849} is an apocalyptic number.

It is an amenable number.

1606423120849 is a deficient number, since it is larger than the sum of its proper divisors (95840383679).

1606423120849 is a wasteful number, since it uses less digits than its factorization.

1606423120849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 1606423120849 in words is "one trillion, six hundred six billion, four hundred twenty-three million, one hundred twenty thousand, eight hundred forty-nine".