3826782181 has 2 divisors, whose sum is σ = 3826782182. Its totient is φ = 3826782180.

The previous prime is 3826782149. The next prime is 3826782227. The reversal of 3826782181 is 1812876283.

It is an a-pointer prime, because the next prime (3826782227) can be obtained adding 3826782181 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2414149956 + 1412632225 = 49134^2 + 37585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3826782181 - 2⁵ = 3826782149 is a prime.

It is a super-2 number, since 2×3826782181² = 29288523721638233522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3826782101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1913391090 + 1913391091.

It is an arithmetic number, because the mean of its divisors is an integer number (1913391091).

Almost surely, 2^3826782181 is an apocalyptic number.

It is an amenable number.

3826782181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3826782181 is an equidigital number, since it uses as much as digits as its factorization.

3826782181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 46.

The square root of 3826782181 is about 61860.9907857933. The cubic root of 3826782181 is about 1564.1482544525.

The spelling of 3826782181 in words is "three billion, eight hundred twenty-six million, seven hundred eighty-two thousand, one hundred eighty-one".