149573173 has 2 divisors, whose sum is σ = 149573174. Its totient is φ = 149573172.

The previous prime is 149573167. The next prime is 149573183. The reversal of 149573173 is 371375941.

149573173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146482609 + 3090564 = 12103^2 + 1758^2 .

It is a cyclic number.

It is not a de Polignac number, because 149573173 - 2¹⁷ = 149442101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149573113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74786586 + 74786587.

It is an arithmetic number, because the mean of its divisors is an integer number (74786587).

Almost surely, 2^149573173 is an apocalyptic number.

It is an amenable number.

149573173 is a deficient number, since it is larger than the sum of its proper divisors (1).

149573173 is an equidigital number, since it uses as much as digits as its factorization.

149573173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 149573173 is about 12230.0111610742. The cubic root of 149573173 is about 530.8248376302.

The spelling of 149573173 in words is "one hundred forty-nine million, five hundred seventy-three thousand, one hundred seventy-three".