38215493 has 2 divisors, whose sum is σ = 38215494. Its totient is φ = 38215492.

The previous prime is 38215483. The next prime is 38215501. The reversal of 38215493 is 39451283.

38215493 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 can be written as a sum of positive squares in only one way, i.e., 23600164 + 14615329 = 4858^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 38215493 - 2¹⁰ = 38214469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38215423) 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, 19107746 + 19107747.

It is an arithmetic number, because the mean of its divisors is an integer number (19107747).

Almost surely, 2^38215493 is an apocalyptic number.

It is an amenable number.

38215493 is a deficient number, since it is larger than the sum of its proper divisors (1).

38215493 is an equidigital number, since it uses as much as digits as its factorization.

38215493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 38215493 is about 6181.8680833547. The cubic root of 38215493 is about 336.8318538234.

The spelling of 38215493 in words is "thirty-eight million, two hundred fifteen thousand, four hundred ninety-three".