1606607538 has 16 divisors (see below), whose sum is σ = 3287941536. Its totient is φ = 523081440.

The previous prime is 1606607537. The next prime is 1606607557. The reversal of 1606607538 is 8357066061.

It is a super-3 number, since 3×1606607538³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1606607538.

It is not an unprimeable number, because it can be changed into a prime (1606607537) 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 7 ways as a sum of consecutive naturals, for example, 3113323 + ... + 3113838.

It is an arithmetic number, because the mean of its divisors is an integer number (205496346).

Almost surely, 2^1606607538 is an apocalyptic number.

1606607538 is an abundant number, since it is smaller than the sum of its proper divisors (1681333998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606607538 is a wasteful number, since it uses less digits than its factorization.

1606607538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227209.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1606607538 is about 40082.5091280474. The cubic root of 1606607538 is about 1171.2149305402.

The spelling of 1606607538 in words is "one billion, six hundred six million, six hundred seven thousand, five hundred thirty-eight".