169454945 has 16 divisors (see below), whose sum is σ = 222670080. Its totient is φ = 122774400.

The previous prime is 169454941. The next prime is 169454951. The reversal of 169454945 is 549454961.

It is not a de Polignac number, because 169454945 - 2² = 169454941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 169454945.

It is not an unprimeable number, because it can be changed into a prime (169454941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9221 + ... + 20589.

It is an arithmetic number, because the mean of its divisors is an integer number (13916880).

Almost surely, 2^169454945 is an apocalyptic number.

It is an amenable number.

169454945 is a deficient number, since it is larger than the sum of its proper divisors (53215135).

169454945 is a wasteful number, since it uses less digits than its factorization.

169454945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656.

The product of its digits is 777600, while the sum is 47.

The square root of 169454945 is about 13017.4861244405. The cubic root of 169454945 is about 553.3731489793.

The spelling of 169454945 in words is "one hundred sixty-nine million, four hundred fifty-four thousand, nine hundred forty-five".