139316161 has 2 divisors, whose sum is σ = 139316162. Its totient is φ = 139316160.

The previous prime is 139316159. The next prime is 139316183. The reversal of 139316161 is 161613931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 56851600 = 9081^2 + 7540^2 .

It is a cyclic number.

It is not a de Polignac number, because 139316161 - 2¹ = 139316159 is a prime.

Together with 139316159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139316101) 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, 69658080 + 69658081.

It is an arithmetic number, because the mean of its divisors is an integer number (69658081).

Almost surely, 2^139316161 is an apocalyptic number.

It is an amenable number.

139316161 is a deficient number, since it is larger than the sum of its proper divisors (1).

139316161 is an equidigital number, since it uses as much as digits as its factorization.

139316161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 31.

The square root of 139316161 is about 11803.2267198423. The cubic root of 139316161 is about 518.4025942010.

The spelling of 139316161 in words is "one hundred thirty-nine million, three hundred sixteen thousand, one hundred sixty-one".