38008661 has 2 divisors, whose sum is σ = 38008662. Its totient is φ = 38008660.

The previous prime is 38008637. The next prime is 38008667. The reversal of 38008661 is 16680083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34586161 + 3422500 = 5881^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 38008661 - 2¹⁸ = 37746517 is a prime.

It is a super-2 number, since 2×38008661² = 2889316622025842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38008667) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19004330 + 19004331.

It is an arithmetic number, because the mean of its divisors is an integer number (19004331).

Almost surely, 2^38008661 is an apocalyptic number.

It is an amenable number.

38008661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38008661 is an equidigital number, since it uses as much as digits as its factorization.

38008661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 38008661 is about 6165.1164628091. The cubic root of 38008661 is about 336.2230809054.

The spelling of 38008661 in words is "thirty-eight million, eight thousand, six hundred sixty-one".