38161121 has 2 divisors, whose sum is σ = 38161122. Its totient is φ = 38161120.

The previous prime is 38161111. The next prime is 38161183. The reversal of 38161121 is 12116183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36300625 + 1860496 = 6025^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 38161121 - 2¹⁰ = 38160097 is a prime.

It is not a weakly prime, because it can be changed into another prime (38161111) 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 as a sum of consecutive naturals, namely, 19080560 + 19080561.

It is an arithmetic number, because the mean of its divisors is an integer number (19080561).

Almost surely, 2^38161121 is an apocalyptic number.

It is an amenable number.

38161121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38161121 is an equidigital number, since it uses as much as digits as its factorization.

38161121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 23.

The square root of 38161121 is about 6177.4688182135. The cubic root of 38161121 is about 336.6720328306.

The spelling of 38161121 in words is "thirty-eight million, one hundred sixty-one thousand, one hundred twenty-one".