16938269 has 4 divisors (see below), whose sum is σ = 17062044. Its totient is φ = 16814496.

The previous prime is 16938211. The next prime is 16938287. The reversal of 16938269 is 96283961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96283961 = 199 ⋅483839.

It can be written as a sum of positive squares in 2 ways, for example, as 4897369 + 12040900 = 2213^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 16938269 - 2⁸ = 16938013 is a prime.

It is a super-2 number, since 2×16938269² = 573809913432722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16938769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61682 + ... + 61955.

It is an arithmetic number, because the mean of its divisors is an integer number (4265511).

Almost surely, 2^16938269 is an apocalyptic number.

It is an amenable number.

16938269 is a deficient number, since it is larger than the sum of its proper divisors (123775).

16938269 is a wasteful number, since it uses less digits than its factorization.

16938269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123774.

The product of its digits is 139968, while the sum is 44.

The square root of 16938269 is about 4115.6128340747. The cubic root of 16938269 is about 256.8165506376.

The spelling of 16938269 in words is "sixteen million, nine hundred thirty-eight thousand, two hundred sixty-nine".