6131645405 has 8 divisors (see below), whose sum is σ = 7370220984. Its totient is φ = 4897152000.

The previous prime is 6131645381. The next prime is 6131645431. The reversal of 6131645405 is 5045461316.

It can be written as a sum of positive squares in 4 ways, for example, as 1890249529 + 4241395876 = 43477^2 + 65126^2 .

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

It is not a de Polignac number, because 6131645405 - 2²⁴ = 6114868189 is a prime.

It is a super-2 number, since 2×6131645405² = 75194150745315228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017236 + ... + 1023245.

It is an arithmetic number, because the mean of its divisors is an integer number (921277623).

Almost surely, 2^6131645405 is an apocalyptic number.

It is an amenable number.

6131645405 is a deficient number, since it is larger than the sum of its proper divisors (1238575579).

6131645405 is a wasteful number, since it uses less digits than its factorization.

6131645405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041087.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 6131645405 is about 78304.8236381387. The cubic root of 6131645405 is about 1830.3143183910.

The spelling of 6131645405 in words is "six billion, one hundred thirty-one million, six hundred forty-five thousand, four hundred five".