38500381 has 2 divisors, whose sum is σ = 38500382. Its totient is φ = 38500380.

The previous prime is 38500369. The next prime is 38500409. The reversal of 38500381 is 18300583.

38500381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (38500409) can be obtained adding 38500381 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35640900 + 2859481 = 5970^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 38500381 - 2⁵ = 38500349 is a prime.

It is a super-2 number, since 2×38500381² = 2964558674290322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38500361) 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, 19250190 + 19250191.

It is an arithmetic number, because the mean of its divisors is an integer number (19250191).

Almost surely, 2^38500381 is an apocalyptic number.

It is an amenable number.

38500381 is a deficient number, since it is larger than the sum of its proper divisors (1).

38500381 is an equidigital number, since it uses as much as digits as its factorization.

38500381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 38500381 is about 6204.8675247744. The cubic root of 38500381 is about 337.6667846892. Note that the first 3 decimals are identical.

The spelling of 38500381 in words is "thirty-eight million, five hundred thousand, three hundred eighty-one".