139016161 has 2 divisors, whose sum is σ = 139016162. Its totient is φ = 139016160.

The previous prime is 139016159. The next prime is 139016173. The reversal of 139016161 is 161610931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133980625 + 5035536 = 11575^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 139016161 - 2¹ = 139016159 is a prime.

Together with 139016159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139016461) 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, 69508080 + 69508081.

It is an arithmetic number, because the mean of its divisors is an integer number (69508081).

Almost surely, 2^139016161 is an apocalyptic number.

It is an amenable number.

139016161 is a deficient number, since it is larger than the sum of its proper divisors (1).

139016161 is an equidigital number, since it uses as much as digits as its factorization.

139016161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 139016161 is about 11790.5114816958. The cubic root of 139016161 is about 518.0302216482.

The spelling of 139016161 in words is "one hundred thirty-nine million, sixteen thousand, one hundred sixty-one".