38661607 has 2 divisors, whose sum is σ = 38661608. Its totient is φ = 38661606.

The previous prime is 38661593. The next prime is 38661631. The reversal of 38661607 is 70616683.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38661607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38661677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19330803 + 19330804.

It is an arithmetic number, because the mean of its divisors is an integer number (19330804).

Almost surely, 2^38661607 is an apocalyptic number.

38661607 is a deficient number, since it is larger than the sum of its proper divisors (1).

38661607 is an equidigital number, since it uses as much as digits as its factorization.

38661607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 38661607 is about 6217.8458488451. The cubic root of 38661607 is about 338.1374713609.

The spelling of 38661607 in words is "thirty-eight million, six hundred sixty-one thousand, six hundred seven".