38821151 has 2 divisors, whose sum is σ = 38821152. Its totient is φ = 38821150.

The previous prime is 38821147. The next prime is 38821157. The reversal of 38821151 is 15112883.

38821151 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 is an emirp because it is prime and its reverse (15112883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38821151 - 2² = 38821147 is a prime.

It is equal to p_2366129 and since 38821151 and 2366129 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38821157) 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, 19410575 + 19410576.

It is an arithmetic number, because the mean of its divisors is an integer number (19410576).

Almost surely, 2^38821151 is an apocalyptic number.

38821151 is a deficient number, since it is larger than the sum of its proper divisors (1).

38821151 is an equidigital number, since it uses as much as digits as its factorization.

38821151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 29.

The square root of 38821151 is about 6230.6621638474. The cubic root of 38821151 is about 338.6019611581.

The spelling of 38821151 in words is "thirty-eight million, eight hundred twenty-one thousand, one hundred fifty-one".