2261617613 has 2 divisors, whose sum is σ = 2261617614. Its totient is φ = 2261617612.

The previous prime is 2261617607. The next prime is 2261617649. The reversal of 2261617613 is 3167161622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1443772009 + 817845604 = 37997^2 + 28598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261617613 - 2⁴ = 2261617597 is a prime.

It is a super-2 number, since 2×2261617613² = 10229828454863635538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261617663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130808806 + 1130808807.

It is an arithmetic number, because the mean of its divisors is an integer number (1130808807).

Almost surely, 2^2261617613 is an apocalyptic number.

It is an amenable number.

2261617613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261617613 is an equidigital number, since it uses as much as digits as its factorization.

2261617613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 2261617613 is about 47556.4676253399. The cubic root of 2261617613 is about 1312.6221420178.

The spelling of 2261617613 in words is "two billion, two hundred sixty-one million, six hundred seventeen thousand, six hundred thirteen".