169870113 has 18 divisors (see below), whose sum is σ = 285428754. Its totient is φ = 97068384.

The previous prime is 169870091. The next prime is 169870123. The reversal of 169870113 is 311078961.

It can be written as a sum of positive squares in only one way, i.e., 98247744 + 71622369 = 9912^2 + 8463^2 .

It is not a de Polignac number, because 169870113 - 2¹⁸ = 169607969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169870123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 192156 + ... + 193037.

It is an arithmetic number, because the mean of its divisors is an integer number (15857153).

Almost surely, 2^169870113 is an apocalyptic number.

It is an amenable number.

169870113 is a deficient number, since it is larger than the sum of its proper divisors (115558641).

169870113 is a wasteful number, since it uses less digits than its factorization.

169870113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385213 (or 385203 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 169870113 is about 13033.4229195557. The cubic root of 169870113 is about 553.8247054951.

The spelling of 169870113 in words is "one hundred sixty-nine million, eight hundred seventy thousand, one hundred thirteen".