16944653 has 4 divisors (see below), whose sum is σ = 18485088. Its totient is φ = 15404220.

The previous prime is 16944649. The next prime is 16944667. The reversal of 16944653 is 35644961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35644961 = 11 ⋅3240451.

It is a cyclic number.

It is not a de Polignac number, because 16944653 - 2² = 16944649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16944953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770201 + ... + 770222.

It is an arithmetic number, because the mean of its divisors is an integer number (4621272).

Almost surely, 2^16944653 is an apocalyptic number.

It is an amenable number.

16944653 is a deficient number, since it is larger than the sum of its proper divisors (1540435).

16944653 is a wasteful number, since it uses less digits than its factorization.

16944653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540434.

The product of its digits is 77760, while the sum is 38.

The square root of 16944653 is about 4116.3883441677. The cubic root of 16944653 is about 256.8488111346.

The spelling of 16944653 in words is "sixteen million, nine hundred forty-four thousand, six hundred fifty-three".