1005131613 has 16 divisors (see below), whose sum is σ = 1449204480. Its totient is φ = 617250816.

The previous prime is 1005131573. The next prime is 1005131629. The reversal of 1005131613 is 3161315001.

It is not a de Polignac number, because 1005131613 - 2⁶ = 1005131549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1005131613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005131653) 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 15 ways as a sum of consecutive naturals, for example, 207268 + ... + 212061.

It is an arithmetic number, because the mean of its divisors is an integer number (90575280).

Almost surely, 2^1005131613 is an apocalyptic number.

It is an amenable number.

1005131613 is a deficient number, since it is larger than the sum of its proper divisors (444072867).

1005131613 is a wasteful number, since it uses less digits than its factorization.

1005131613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419396.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 1005131613 is about 31703.8107015545. The cubic root of 1005131613 is about 1001.7076200407.

Adding to 1005131613 its reverse (3161315001), we get a palindrome (4166446614).

The spelling of 1005131613 in words is "one billion, five million, one hundred thirty-one thousand, six hundred thirteen".