1606171361 has 4 divisors (see below), whose sum is σ = 1607390400. Its totient is φ = 1604952324.

The previous prime is 1606171321. The next prime is 1606171379. The reversal of 1606171361 is 1631716061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1606171361 - 2³⁰ = 532429537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606171321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607541 + ... + 610178.

It is an arithmetic number, because the mean of its divisors is an integer number (401847600).

Almost surely, 2^1606171361 is an apocalyptic number.

It is an amenable number.

1606171361 is a deficient number, since it is larger than the sum of its proper divisors (1219039).

1606171361 is a wasteful number, since it uses less digits than its factorization.

1606171361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219038.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1606171361 is about 40077.0677694863. The cubic root of 1606171361 is about 1171.1089301137.

The spelling of 1606171361 in words is "one billion, six hundred six million, one hundred seventy-one thousand, three hundred sixty-one".