149744173 has 2 divisors, whose sum is σ = 149744174. Its totient is φ = 149744172.

The previous prime is 149744137. The next prime is 149744213. The reversal of 149744173 is 371447941.

Together with previous prime (149744137) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (149744213) can be obtained adding 149744173 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149744169 + 4 = 12237^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 149744173 - 2⁹ = 149743661 is a prime.

It is a super-3 number, since 3×149744173³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149744113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74872086 + 74872087.

It is an arithmetic number, because the mean of its divisors is an integer number (74872087).

Almost surely, 2^149744173 is an apocalyptic number.

It is an amenable number.

149744173 is a deficient number, since it is larger than the sum of its proper divisors (1).

149744173 is an equidigital number, since it uses as much as digits as its factorization.

149744173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 149744173 is about 12237.0001634388. Note that the first 3 decimals coincide. The cubic root of 149744173 is about 531.0270496445.

The spelling of 149744173 in words is "one hundred forty-nine million, seven hundred forty-four thousand, one hundred seventy-three".