16545945 has 48 divisors (see below), whose sum is σ = 29408832. Its totient is φ = 7937280.

The previous prime is 16545929. The next prime is 16545959. The reversal of 16545945 is 54954561.

It is not a de Polignac number, because 16545945 - 2⁴ = 16545929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154582 + ... + 154688.

It is an arithmetic number, because the mean of its divisors is an integer number (612684).

Almost surely, 2^16545945 is an apocalyptic number.

16545945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16545945 is a deficient number, since it is larger than the sum of its proper divisors (12862887).

16545945 is a wasteful number, since it uses less digits than its factorization.

16545945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 189 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 16545945 is about 4067.6707093864. The cubic root of 16545945 is about 254.8182480337.

The spelling of 16545945 in words is "sixteen million, five hundred forty-five thousand, nine hundred forty-five".