2261616073 has 2 divisors, whose sum is σ = 2261616074. Its totient is φ = 2261616072.

The previous prime is 2261616061. The next prime is 2261616103. The reversal of 2261616073 is 3706161622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1281425209 + 980190864 = 35797^2 + 31308^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261616073 - 2¹⁷ = 2261485001 is a prime.

It is a super-2 number, since 2×2261616073² = 10229814523303882658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2261616043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130808036 + 1130808037.

It is an arithmetic number, because the mean of its divisors is an integer number (1130808037).

Almost surely, 2^2261616073 is an apocalyptic number.

It is an amenable number.

2261616073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261616073 is an equidigital number, since it uses as much as digits as its factorization.

2261616073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2261616073 is about 47556.4514340589. The cubic root of 2261616073 is about 1312.6218440837.

Adding to 2261616073 its reverse (3706161622), we get a palindrome (5967777695).

The spelling of 2261616073 in words is "two billion, two hundred sixty-one million, six hundred sixteen thousand, seventy-three".