149738161 has 2 divisors, whose sum is σ = 149738162. Its totient is φ = 149738160.

The previous prime is 149738131. The next prime is 149738177. The reversal of 149738161 is 161837941.

149738161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133287025 + 16451136 = 11545^2 + 4056^2 .

It is a cyclic number.

It is not a de Polignac number, because 149738161 - 2¹¹ = 149736113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149738131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74869080 + 74869081.

It is an arithmetic number, because the mean of its divisors is an integer number (74869081).

Almost surely, 2^149738161 is an apocalyptic number.

It is an amenable number.

149738161 is a deficient number, since it is larger than the sum of its proper divisors (1).

149738161 is an equidigital number, since it uses as much as digits as its factorization.

149738161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 149738161 is about 12236.7545125331. The cubic root of 149738161 is about 531.0199429075.

The spelling of 149738161 in words is "one hundred forty-nine million, seven hundred thirty-eight thousand, one hundred sixty-one".