38081789 has 4 divisors (see below), whose sum is σ = 38967456. Its totient is φ = 37196124.

The previous prime is 38081779. The next prime is 38081801. The reversal of 38081789 is 98718083.

38081789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98718083 = 2999 ⋅32917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38081789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38081749) 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 in 3 ways as a sum of consecutive naturals, for example, 442769 + ... + 442854.

It is an arithmetic number, because the mean of its divisors is an integer number (9741864).

Almost surely, 2^38081789 is an apocalyptic number.

It is an amenable number.

38081789 is a deficient number, since it is larger than the sum of its proper divisors (885667).

38081789 is an equidigital number, since it uses as much as digits as its factorization.

38081789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885666.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 38081789 is about 6171.0444010718. The cubic root of 38081789 is about 336.4385718762.

The spelling of 38081789 in words is "thirty-eight million, eighty-one thousand, seven hundred eighty-nine".