16945269 has 16 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 10171760.

The previous prime is 16945267. The next prime is 16945289. The reversal of 16945269 is 96254961.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16945269 - 2¹ = 16945267 is a prime.

It is a super-2 number, since 2×16945269² = 574284282964722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 16945269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16945267) 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, 1132 + ... + 5930.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^16945269 is an apocalyptic number.

It is an amenable number.

16945269 is a deficient number, since it is larger than the sum of its proper divisors (7937931).

16945269 is a wasteful number, since it uses less digits than its factorization.

16945269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its digits is 116640, while the sum is 42.

The square root of 16945269 is about 4116.4631663602. The cubic root of 16945269 is about 256.8519235609.

The spelling of 16945269 in words is "sixteen million, nine hundred forty-five thousand, two hundred sixty-nine".