38642893 has 2 divisors, whose sum is σ = 38642894. Its totient is φ = 38642892.

The previous prime is 38642861. The next prime is 38642927. The reversal of 38642893 is 39824683.

38642893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 17867529 = 4558^2 + 4227^2 .

It is an emirp because it is prime and its reverse (39824683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38642893 - 2⁵ = 38642861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38642803) 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, 19321446 + 19321447.

It is an arithmetic number, because the mean of its divisors is an integer number (19321447).

Almost surely, 2^38642893 is an apocalyptic number.

It is an amenable number.

38642893 is a deficient number, since it is larger than the sum of its proper divisors (1).

38642893 is an equidigital number, since it uses as much as digits as its factorization.

38642893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 38642893 is about 6216.3408046857. The cubic root of 38642893 is about 338.0829045145.

The spelling of 38642893 in words is "thirty-eight million, six hundred forty-two thousand, eight hundred ninety-three".