613161541 has 4 divisors (see below), whose sum is σ = 619482892. Its totient is φ = 606840192.

The previous prime is 613161517. The next prime is 613161547. The reversal of 613161541 is 145161316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 497513025 + 115648516 = 22305^2 + 10754^2 .

It is a cyclic number.

It is not a de Polignac number, because 613161541 - 2⁵ = 613161509 is a prime.

It is a super-2 number, since 2×613161541² = 751934150722989362, 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 (613161547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160530 + ... + 3160723.

It is an arithmetic number, because the mean of its divisors is an integer number (154870723).

Almost surely, 2^613161541 is an apocalyptic number.

It is an amenable number.

613161541 is a deficient number, since it is larger than the sum of its proper divisors (6321351).

613161541 is an equidigital number, since it uses as much as digits as its factorization.

613161541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321350.

The product of its digits is 2160, while the sum is 28.

The square root of 613161541 is about 24762.0988811530. The cubic root of 613161541 is about 849.5552649252. Note that the first 3 decimals are identical.

The spelling of 613161541 in words is "six hundred thirteen million, one hundred sixty-one thousand, five hundred forty-one".