149713171 has 2 divisors, whose sum is σ = 149713172. Its totient is φ = 149713170.

The previous prime is 149713163. The next prime is 149713177. The reversal of 149713171 is 171317941.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149713171 - 2³ = 149713163 is a prime.

It is not a weakly prime, because it can be changed into another prime (149713177) 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, 74856585 + 74856586.

It is an arithmetic number, because the mean of its divisors is an integer number (74856586).

Almost surely, 2^149713171 is an apocalyptic number.

149713171 is a deficient number, since it is larger than the sum of its proper divisors (1).

149713171 is an equidigital number, since it uses as much as digits as its factorization.

149713171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 149713171 is about 12235.7333658429. The cubic root of 149713171 is about 530.9904003901.

The spelling of 149713171 in words is "one hundred forty-nine million, seven hundred thirteen thousand, one hundred seventy-one".