3786091081 has 4 divisors (see below), whose sum is σ = 3787644564. Its totient is φ = 3784537600.

The previous prime is 3786091079. The next prime is 3786091109. The reversal of 3786091081 is 1801906873.

3786091081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 115670025 + 3670421056 = 10755^2 + 60584^2 .

It is a cyclic number.

It is not a de Polignac number, because 3786091081 - 2¹ = 3786091079 is a prime.

It is a super-2 number, since 2×3786091081² = 28668971347255497122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3786091021) 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, 773080 + ... + 777961.

It is an arithmetic number, because the mean of its divisors is an integer number (946911141).

Almost surely, 2^3786091081 is an apocalyptic number.

It is an amenable number.

3786091081 is a deficient number, since it is larger than the sum of its proper divisors (1553483).

3786091081 is a wasteful number, since it uses less digits than its factorization.

3786091081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553482.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 3786091081 is about 61531.2203763260. The cubic root of 3786091081 is about 1558.5844985180.

The spelling of 3786091081 in words is "three billion, seven hundred eighty-six million, ninety-one thousand, eighty-one".