38388631 has 2 divisors, whose sum is σ = 38388632. Its totient is φ = 38388630.

The previous prime is 38388617. The next prime is 38388641. The reversal of 38388631 is 13688383.

38388631 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 38388631 - 2¹⁷ = 38257559 is a prime.

It is a super-2 number, since 2×38388631² = 2947373980108322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38388641) 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, 19194315 + 19194316.

It is an arithmetic number, because the mean of its divisors is an integer number (19194316).

Almost surely, 2^38388631 is an apocalyptic number.

38388631 is a deficient number, since it is larger than the sum of its proper divisors (1).

38388631 is an equidigital number, since it uses as much as digits as its factorization.

38388631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 38388631 is about 6195.8559537807. The cubic root of 38388631 is about 337.3397677441.

The spelling of 38388631 in words is "thirty-eight million, three hundred eighty-eight thousand, six hundred thirty-one".