169888961 has 12 divisors (see below), whose sum is σ = 187740672. Its totient is φ = 153615000.

The previous prime is 169888949. The next prime is 169888963.

169888961 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 169888961 - 2¹⁰ = 169887937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169888897 and 169888906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169888963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19436 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (15645056).

Almost surely, 2^169888961 is an apocalyptic number.

169888961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

169888961 is a deficient number, since it is larger than the sum of its proper divisors (17851711).

169888961 is a wasteful number, since it uses less digits than its factorization.

169888961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7564 (or 7553 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 56.

The square root of 169888961 is about 13034.1459635835. The cubic root of 169888961 is about 553.8451880112.

The spelling of 169888961 in words is "one hundred sixty-nine million, eight hundred eighty-eight thousand, nine hundred sixty-one".