169930243 has 16 divisors (see below), whose sum is σ = 208293120. Its totient is φ = 135379296.

The previous prime is 169930223. The next prime is 169930247. The reversal of 169930243 is 342039961.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169930243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169930247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5005 + ... + 19102.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^169930243 is an apocalyptic number.

169930243 is a deficient number, since it is larger than the sum of its proper divisors (38362877).

169930243 is a wasteful number, since it uses less digits than its factorization.

169930243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24186.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 169930243 is about 13035.7294770949. The cubic root of 169930243 is about 553.8900447326.

The spelling of 169930243 in words is "one hundred sixty-nine million, nine hundred thirty thousand, two hundred forty-three".