2261438271 has 40 divisors (see below), whose sum is σ = 3469135824. Its totient is φ = 1467227520.

The previous prime is 2261438227. The next prime is 2261438303. The reversal of 2261438271 is 1728341622.

It is a happy number.

2261438271 is a `hidden beast` number, since 2 + 2 + 614 + 38 + 2 + 7 + 1 = 666.

It is not a de Polignac number, because 2261438271 - 2⁷ = 2261438143 is a prime.

It is a super-2 number, since 2×2261438271² = 10228206107086938882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261433271) 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 39 ways as a sum of consecutive naturals, for example, 2267745 + ... + 2268741.

Almost surely, 2^2261438271 is an apocalyptic number.

2261438271 is a deficient number, since it is larger than the sum of its proper divisors (1207697553).

2261438271 is an equidigital number, since it uses as much as digits as its factorization.

2261438271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1724 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2261438271 is about 47554.5820189811. The cubic root of 2261438271 is about 1312.5874449494.

Adding to 2261438271 its reverse (1728341622), we get a palindrome (3989779893).

The spelling of 2261438271 in words is "two billion, two hundred sixty-one million, four hundred thirty-eight thousand, two hundred seventy-one".