38638087 has 2 divisors, whose sum is σ = 38638088. Its totient is φ = 38638086.

The previous prime is 38638079. The next prime is 38638133. The reversal of 38638087 is 78083683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38638087 - 2³ = 38638079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38638387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19319043 + 19319044.

It is an arithmetic number, because the mean of its divisors is an integer number (19319044).

Almost surely, 2^38638087 is an apocalyptic number.

38638087 is a deficient number, since it is larger than the sum of its proper divisors (1).

38638087 is an equidigital number, since it uses as much as digits as its factorization.

38638087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 38638087 is about 6215.9542308482. The cubic root of 38638087 is about 338.0688881915.

The spelling of 38638087 in words is "thirty-eight million, six hundred thirty-eight thousand, eighty-seven".