3738666861 has 10 divisors (see below), whose sum is σ = 5584922222. Its totient is φ = 2492444520.

The previous prime is 3738666823. The next prime is 3738666901. The reversal of 3738666861 is 1686668373.

It can be written as a sum of positive squares in only one way, i.e., 3386541636 + 352125225 = 58194^2 + 18765^2 .

It is not a de Polignac number, because 3738666861 - 2¹⁷ = 3738535789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3738666798 and 3738666807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3738666761) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23078110 + ... + 23078271.

Almost surely, 2^3738666861 is an apocalyptic number.

It is an amenable number.

3738666861 is a deficient number, since it is larger than the sum of its proper divisors (1846255361).

3738666861 is an equidigital number, since it uses as much as digits as its factorization.

3738666861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46156393 (or 46156384 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 3738666861 is about 61144.6388573847. The cubic root of 3738666861 is about 1552.0495759762.

The spelling of 3738666861 in words is "three billion, seven hundred thirty-eight million, six hundred sixty-six thousand, eight hundred sixty-one".