2061226613 has 4 divisors (see below), whose sum is σ = 2089462668. Its totient is φ = 2032990560.

The previous prime is 2061226597. The next prime is 2061226621. The reversal of 2061226613 is 3166221602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3166221602 = 2 ⋅1583110801.

It can be written as a sum of positive squares in 2 ways, for example, as 1389276529 + 671950084 = 37273^2 + 25922^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061226613 - 2⁴ = 2061226597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061226633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14117918 + ... + 14118063.

It is an arithmetic number, because the mean of its divisors is an integer number (522365667).

Almost surely, 2^2061226613 is an apocalyptic number.

It is an amenable number.

2061226613 is a deficient number, since it is larger than the sum of its proper divisors (28236055).

2061226613 is an equidigital number, since it uses as much as digits as its factorization.

2061226613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28236054.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2061226613 is about 45400.7336174208. The cubic root of 2061226613 is about 1272.6488235355.

The spelling of 2061226613 in words is "two billion, sixty-one million, two hundred twenty-six thousand, six hundred thirteen".