1606534385 has 4 divisors (see below), whose sum is σ = 1927841268. Its totient is φ = 1285227504.

The previous prime is 1606534367. The next prime is 1606534387. The reversal of 1606534385 is 5834356061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5834356061 = 41357 ⋅141073.

It can be written as a sum of positive squares in 2 ways, for example, as 1008634081 + 597900304 = 31759^2 + 24452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606534385 - 2²⁰ = 1605485809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606534387) 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 in 3 ways as a sum of consecutive naturals, for example, 160653434 + ... + 160653443.

It is an arithmetic number, because the mean of its divisors is an integer number (481960317).

Almost surely, 2^1606534385 is an apocalyptic number.

It is an amenable number.

1606534385 is a deficient number, since it is larger than the sum of its proper divisors (321306883).

1606534385 is an equidigital number, since it uses as much as digits as its factorization.

1606534385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321306882.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 1606534385 is about 40081.5965874614. The cubic root of 1606534385 is about 1171.1971541212.

The spelling of 1606534385 in words is "one billion, six hundred six million, five hundred thirty-four thousand, three hundred eighty-five".