2261354209 has 2 divisors, whose sum is σ = 2261354210. Its totient is φ = 2261354208.

The previous prime is 2261354171. The next prime is 2261354267. The reversal of 2261354209 is 9024531622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1962755809 + 298598400 = 44303^2 + 17280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261354209 - 2⁹ = 2261353697 is a prime.

It is a super-2 number, since 2×2261354209² = 10227445717124031362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2261354269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130677104 + 1130677105.

It is an arithmetic number, because the mean of its divisors is an integer number (1130677105).

Almost surely, 2^2261354209 is an apocalyptic number.

It is an amenable number.

2261354209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261354209 is an equidigital number, since it uses as much as digits as its factorization.

2261354209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2261354209 is about 47553.6981632344. The cubic root of 2261354209 is about 1312.5711809498.

The spelling of 2261354209 in words is "two billion, two hundred sixty-one million, three hundred fifty-four thousand, two hundred nine".