169520049 has 6 divisors (see below), whose sum is σ = 244862306. Its totient is φ = 113013360.

The previous prime is 169520047. The next prime is 169520053. The reversal of 169520049 is 940025961.

169520049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 43362225 = 11232^2 + 6585^2 .

It is not a de Polignac number, because 169520049 - 2¹ = 169520047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169519995 and 169520022.

It is not an unprimeable number, because it can be changed into a prime (169520041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9417772 + ... + 9417789.

Almost surely, 2^169520049 is an apocalyptic number.

It is an amenable number.

169520049 is a deficient number, since it is larger than the sum of its proper divisors (75342257).

169520049 is a wasteful number, since it uses less digits than its factorization.

169520049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18835567 (or 18835564 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 169520049 is about 13019.9865207303. The cubic root of 169520049 is about 553.4440079180. Note that the first 3 decimals are identical.

The spelling of 169520049 in words is "one hundred sixty-nine million, five hundred twenty thousand, forty-nine".