613381441 has 2 divisors, whose sum is σ = 613381442. Its totient is φ = 613381440.

The previous prime is 613381399. The next prime is 613381499. The reversal of 613381441 is 144183316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522579600 + 90801841 = 22860^2 + 9529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613381441 is a prime.

It is not a weakly prime, because it can be changed into another prime (613385441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306690720 + 306690721.

It is an arithmetic number, because the mean of its divisors is an integer number (306690721).

Almost surely, 2^613381441 is an apocalyptic number.

It is an amenable number.

613381441 is a deficient number, since it is larger than the sum of its proper divisors (1).

613381441 is an equidigital number, since it uses as much as digits as its factorization.

613381441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 613381441 is about 24766.5387367714. The cubic root of 613381441 is about 849.6568123216.

The spelling of 613381441 in words is "six hundred thirteen million, three hundred eighty-one thousand, four hundred forty-one".