1536666413 has 8 divisors (see below), whose sum is σ = 1604242200. Its totient is φ = 1470063168.

The previous prime is 1536666407. The next prime is 1536666421. The reversal of 1536666413 is 3146666351.

It can be written as a sum of positive squares in 4 ways, for example, as 902281444 + 634384969 = 30038^2 + 25187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1536666413 - 2²⁶ = 1469557549 is a prime.

It is a super-2 number, since 2×1536666413² = 4722687329684573138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1536666403) 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 7 ways as a sum of consecutive naturals, for example, 239906 + ... + 246227.

It is an arithmetic number, because the mean of its divisors is an integer number (200530275).

Almost surely, 2^1536666413 is an apocalyptic number.

It is an amenable number.

1536666413 is a deficient number, since it is larger than the sum of its proper divisors (67575787).

1536666413 is a wasteful number, since it uses less digits than its factorization.

1536666413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486271.

The product of its digits is 233280, while the sum is 41.

The square root of 1536666413 is about 39200.3368990625. The cubic root of 1536666413 is about 1153.9664956377.

The spelling of 1536666413 in words is "one billion, five hundred thirty-six million, six hundred sixty-six thousand, four hundred thirteen".