2681774261 has 4 divisors (see below), whose sum is σ = 2684607072. Its totient is φ = 2678941452.

The previous prime is 2681774233. The next prime is 2681774267. The reversal of 2681774261 is 1624771862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2681774261 - 2¹⁴ = 2681757877 is a prime.

It is a super-2 number, since 2×2681774261² = 14383826373924192242, which contains 22 as substring.

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 (2681774267) 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 in 3 ways as a sum of consecutive naturals, for example, 1414985 + ... + 1416878.

It is an arithmetic number, because the mean of its divisors is an integer number (671151768).

Almost surely, 2^2681774261 is an apocalyptic number.

It is an amenable number.

2681774261 is a deficient number, since it is larger than the sum of its proper divisors (2832811).

2681774261 is an equidigital number, since it uses as much as digits as its factorization.

2681774261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832810.

The product of its digits is 225792, while the sum is 44.

The square root of 2681774261 is about 51785.8500075069. The cubic root of 2681774261 is about 1389.3363740363.

The spelling of 2681774261 in words is "two billion, six hundred eighty-one million, seven hundred seventy-four thousand, two hundred sixty-one".