38159861 has 4 divisors (see below), whose sum is σ = 38250924. Its totient is φ = 38068800.

The previous prime is 38159851. The next prime is 38159867. The reversal of 38159861 is 16895183.

38159861 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.

It can be written as a sum of positive squares in 2 ways, for example, as 13468900 + 24690961 = 3670^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 38159861 - 2¹⁴ = 38143477 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 (38159867) 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, 44900 + ... + 45741.

It is an arithmetic number, because the mean of its divisors is an integer number (9562731).

Almost surely, 2^38159861 is an apocalyptic number.

It is an amenable number.

38159861 is a deficient number, since it is larger than the sum of its proper divisors (91063).

38159861 is an equidigital number, since it uses as much as digits as its factorization.

38159861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91062.

The product of its digits is 51840, while the sum is 41.

The square root of 38159861 is about 6177.3668338540. The cubic root of 38159861 is about 336.6683273889.

The spelling of 38159861 in words is "thirty-eight million, one hundred fifty-nine thousand, eight hundred sixty-one".