169730445 has 16 divisors (see below), whose sum is σ = 271740672. Its totient is φ = 90465600.

The previous prime is 169730443. The next prime is 169730453. The reversal of 169730445 is 544037961.

169730445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169730445 - 2¹ = 169730443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169730441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32859 + ... + 37671.

It is an arithmetic number, because the mean of its divisors is an integer number (16983792).

Almost surely, 2^169730445 is an apocalyptic number.

169730445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

169730445 is a deficient number, since it is larger than the sum of its proper divisors (102010227).

169730445 is a wasteful number, since it uses less digits than its factorization.

169730445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 169730445 is about 13028.0637471575. The cubic root of 169730445 is about 553.6728781236.

The spelling of 169730445 in words is "one hundred sixty-nine million, seven hundred thirty thousand, four hundred forty-five".