16180945 has 8 divisors (see below), whose sum is σ = 21182400. Its totient is φ = 11767920.

The previous prime is 16180919. The next prime is 16180949. The reversal of 16180945 is 54908161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16180945 - 2²¹ = 14083793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16180945.

It is not an unprimeable number, because it can be changed into a prime (16180949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147045 + ... + 147154.

It is an arithmetic number, because the mean of its divisors is an integer number (2647800).

Almost surely, 2^16180945 is an apocalyptic number.

It is an amenable number.

16180945 is a deficient number, since it is larger than the sum of its proper divisors (5001455).

16180945 is a wasteful number, since it uses less digits than its factorization.

16180945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294215.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 16180945 is about 4022.5545366098. The cubic root of 16180945 is about 252.9305532023.

The spelling of 16180945 in words is "sixteen million, one hundred eighty thousand, nine hundred forty-five".