38381129 has 4 divisors (see below), whose sum is σ = 38430084. Its totient is φ = 38332176.

The previous prime is 38381117. The next prime is 38381141. The reversal of 38381129 is 92118383.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (38381117) and next prime (38381141).

It can be written as a sum of positive squares in 2 ways, for example, as 30691600 + 7689529 = 5540^2 + 2773^2 .

It is a cyclic number.

It is not a de Polignac number, because 38381129 - 2⁴ = 38381113 is a prime.

It is a super-2 number, since 2×38381129² = 2946222126629282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38381149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23282 + ... + 24875.

It is an arithmetic number, because the mean of its divisors is an integer number (9607521).

Almost surely, 2^38381129 is an apocalyptic number.

It is an amenable number.

38381129 is a deficient number, since it is larger than the sum of its proper divisors (48955).

38381129 is an equidigital number, since it uses as much as digits as its factorization.

38381129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48954.

The product of its digits is 10368, while the sum is 35.

The square root of 38381129 is about 6195.2505195512. The cubic root of 38381129 is about 337.3177917255.

The spelling of 38381129 in words is "thirty-eight million, three hundred eighty-one thousand, one hundred twenty-nine".