38638651 has 2 divisors, whose sum is σ = 38638652. Its totient is φ = 38638650.

The previous prime is 38638601. The next prime is 38638657. The reversal of 38638651 is 15683683.

38638651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38638651 - 2²³ = 30250043 is a prime.

It is not a weakly prime, because it can be changed into another prime (38638657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19319325 + 19319326.

It is an arithmetic number, because the mean of its divisors is an integer number (19319326).

Almost surely, 2^38638651 is an apocalyptic number.

38638651 is a deficient number, since it is larger than the sum of its proper divisors (1).

38638651 is an equidigital number, since it uses as much as digits as its factorization.

38638651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 38638651 is about 6215.9995978121. Note that the first 3 decimals coincide. The cubic root of 38638651 is about 338.0705331136.

The spelling of 38638651 in words is "thirty-eight million, six hundred thirty-eight thousand, six hundred fifty-one".