38661533 has 2 divisors, whose sum is σ = 38661534. Its totient is φ = 38661532.

The previous prime is 38661509. The next prime is 38661541. The reversal of 38661533 is 33516683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29888089 + 8773444 = 5467^2 + 2962^2 .

It is a cyclic number.

It is not a de Polignac number, because 38661533 - 2⁸ = 38661277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38661493 and 38661502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38661503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19330766 + 19330767.

It is an arithmetic number, because the mean of its divisors is an integer number (19330767).

Almost surely, 2^38661533 is an apocalyptic number.

It is an amenable number.

38661533 is a deficient number, since it is larger than the sum of its proper divisors (1).

38661533 is an equidigital number, since it uses as much as digits as its factorization.

38661533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 38661533 is about 6217.8398982283. The cubic root of 38661533 is about 338.1372556241.

The spelling of 38661533 in words is "thirty-eight million, six hundred sixty-one thousand, five hundred thirty-three".