149594161 has 2 divisors, whose sum is σ = 149594162. Its totient is φ = 149594160.

The previous prime is 149594149. The next prime is 149594171. The reversal of 149594161 is 161495941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138203536 + 11390625 = 11756^2 + 3375^2 .

It is an emirp because it is prime and its reverse (161495941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149594161 - 2⁹ = 149593649 is a prime.

It is not a weakly prime, because it can be changed into another prime (149594111) 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, 74797080 + 74797081.

It is an arithmetic number, because the mean of its divisors is an integer number (74797081).

Almost surely, 2^149594161 is an apocalyptic number.

It is an amenable number.

149594161 is a deficient number, since it is larger than the sum of its proper divisors (1).

149594161 is an equidigital number, since it uses as much as digits as its factorization.

149594161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 149594161 is about 12230.8691841586. The cubic root of 149594161 is about 530.8496647888.

The spelling of 149594161 in words is "one hundred forty-nine million, five hundred ninety-four thousand, one hundred sixty-one".