149112169 has 2 divisors, whose sum is σ = 149112170. Its totient is φ = 149112168.

The previous prime is 149112167. The next prime is 149112179. The reversal of 149112169 is 961211941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142922025 + 6190144 = 11955^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 149112169 - 2¹ = 149112167 is a prime.

It is a super-2 number, since 2×149112169² = 44468877887769122, which contains 22 as substring.

Together with 149112167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149112167) 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, 74556084 + 74556085.

It is an arithmetic number, because the mean of its divisors is an integer number (74556085).

Almost surely, 2^149112169 is an apocalyptic number.

It is an amenable number.

149112169 is a deficient number, since it is larger than the sum of its proper divisors (1).

149112169 is an equidigital number, since it uses as much as digits as its factorization.

149112169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 149112169 is about 12211.1493726021. The cubic root of 149112169 is about 530.2789192865.

The spelling of 149112169 in words is "one hundred forty-nine million, one hundred twelve thousand, one hundred sixty-nine".