3816879181 has 4 divisors (see below), whose sum is σ = 3820988700. Its totient is φ = 3812769664.

The previous prime is 3816879179. The next prime is 3816879197. The reversal of 3816879181 is 1819786183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1040643081 + 2776236100 = 32259^2 + 52690^2 .

It is a cyclic number.

It is not a de Polignac number, because 3816879181 - 2¹ = 3816879179 is a prime.

It is a super-2 number, since 2×3816879181² = 29137133364702461522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3816879161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053366 + ... + 2055223.

It is an arithmetic number, because the mean of its divisors is an integer number (955247175).

Almost surely, 2^3816879181 is an apocalyptic number.

It is an amenable number.

3816879181 is a deficient number, since it is larger than the sum of its proper divisors (4109519).

3816879181 is an equidigital number, since it uses as much as digits as its factorization.

3816879181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109518.

The product of its digits is 580608, while the sum is 52.

The square root of 3816879181 is about 61780.8965700563. The cubic root of 3816879181 is about 1562.7978473992.

The spelling of 3816879181 in words is "three billion, eight hundred sixteen million, eight hundred seventy-nine thousand, one hundred eighty-one".