1606349173 has 24 divisors (see below), whose sum is σ = 1932763448. Its totient is φ = 1325808000.

The previous prime is 1606349161. The next prime is 1606349177. The reversal of 1606349173 is 3719436061.

It can be written as a sum of positive squares in 4 ways, for example, as 70257924 + 1536091249 = 8382^2 + 39193^2 .

It is not a de Polignac number, because 1606349173 - 2⁹ = 1606348661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606349177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87583 + ... + 104323.

Almost surely, 2^1606349173 is an apocalyptic number.

1606349173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1606349173 is a deficient number, since it is larger than the sum of its proper divisors (326414275).

1606349173 is a wasteful number, since it uses less digits than its factorization.

1606349173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16837 (or 16826 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1606349173 is about 40079.2860839611. The cubic root of 1606349173 is about 1171.1521445848.

The spelling of 1606349173 in words is "one billion, six hundred six million, three hundred forty-nine thousand, one hundred seventy-three".