169982149 has 4 divisors (see below), whose sum is σ = 172519264. Its totient is φ = 167445036.

The previous prime is 169982143. The next prime is 169982177. The reversal of 169982149 is 941289961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941289961 = 4271 ⋅220391.

It is a cyclic number.

It is not a de Polignac number, because 169982149 - 2¹⁹ = 169457861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169982143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268457 + ... + 1268590.

It is an arithmetic number, because the mean of its divisors is an integer number (43129816).

Almost surely, 2^169982149 is an apocalyptic number.

It is an amenable number.

169982149 is a deficient number, since it is larger than the sum of its proper divisors (2537115).

169982149 is an equidigital number, since it uses as much as digits as its factorization.

169982149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537114.

The product of its digits is 279936, while the sum is 49.

The square root of 169982149 is about 13037.7202378330. The cubic root of 169982149 is about 553.9464351066.

The spelling of 169982149 in words is "one hundred sixty-nine million, nine hundred eighty-two thousand, one hundred forty-nine".