3613122861 has 4 divisors (see below), whose sum is σ = 4817497152. Its totient is φ = 2408748572.

The previous prime is 3613122817. The next prime is 3613122871. The reversal of 3613122861 is 1682213163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3613122861 - 2⁹ = 3613122349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613122811) 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 3 ways as a sum of consecutive naturals, for example, 602187141 + ... + 602187146.

It is an arithmetic number, because the mean of its divisors is an integer number (1204374288).

Almost surely, 2^3613122861 is an apocalyptic number.

It is an amenable number.

3613122861 is a deficient number, since it is larger than the sum of its proper divisors (1204374291).

3613122861 is a wasteful number, since it uses less digits than its factorization.

3613122861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204374290.

The product of its digits is 10368, while the sum is 33.

The square root of 3613122861 is about 60109.2576979620. The cubic root of 3613122861 is about 1534.4788606757.

The spelling of 3613122861 in words is "three billion, six hundred thirteen million, one hundred twenty-two thousand, eight hundred sixty-one".