3789137881 has 4 divisors (see below), whose sum is σ = 3790059700. Its totient is φ = 3788216064.

The previous prime is 3789137879. The next prime is 3789137893. The reversal of 3789137881 is 1887319873.

It is a happy number.

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 2406785481 + 1382352400 = 49059^2 + 37180^2 .

It is a cyclic number.

It is not a de Polignac number, because 3789137881 - 2¹ = 3789137879 is a prime.

It is a super-2 number, since 2×3789137881² = 28715131762458340322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3789137801) 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 3 ways as a sum of consecutive naturals, for example, 454716 + ... + 462973.

It is an arithmetic number, because the mean of its divisors is an integer number (947514925).

Almost surely, 2^3789137881 is an apocalyptic number.

It is an amenable number.

3789137881 is a deficient number, since it is larger than the sum of its proper divisors (921819).

3789137881 is an equidigital number, since it uses as much as digits as its factorization.

3789137881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921818.

The product of its digits is 2032128, while the sum is 55.

The square root of 3789137881 is about 61555.9735606545. The cubic root of 3789137881 is about 1559.0024689175.

The spelling of 3789137881 in words is "three billion, seven hundred eighty-nine million, one hundred thirty-seven thousand, eight hundred eighty-one".