38738861 has 6 divisors (see below), whose sum is σ = 45063630. Its totient is φ = 33204696.

The previous prime is 38738851. The next prime is 38738873. The reversal of 38738861 is 16883783.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 1223236 = 6125^2 + 1106^2 .

It is not a de Polignac number, because 38738861 - 2²² = 34544557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38738851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395246 + ... + 395343.

It is an arithmetic number, because the mean of its divisors is an integer number (7510605).

Almost surely, 2^38738861 is an apocalyptic number.

It is an amenable number.

38738861 is a deficient number, since it is larger than the sum of its proper divisors (6324769).

38738861 is an equidigital number, since it uses as much as digits as its factorization.

38738861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790603 (or 790596 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 38738861 is about 6224.0550286770. The cubic root of 38738861 is about 338.3625447100.

The spelling of 38738861 in words is "thirty-eight million, seven hundred thirty-eight thousand, eight hundred sixty-one".