16453919 has 4 divisors (see below), whose sum is σ = 16470144. Its totient is φ = 16437696.

The previous prime is 16453889. The next prime is 16453939. The reversal of 16453919 is 91935461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16453919 - 2⁸ = 16453663 is a prime.

It is a super-2 number, since 2×16453919² = 541462900917122, 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 (16453939) 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, 6482 + ... + 8655.

It is an arithmetic number, because the mean of its divisors is an integer number (4117536).

Almost surely, 2^16453919 is an apocalyptic number.

16453919 is a deficient number, since it is larger than the sum of its proper divisors (16225).

16453919 is a wasteful number, since it uses less digits than its factorization.

16453919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16224.

The product of its digits is 29160, while the sum is 38.

The square root of 16453919 is about 4056.3430574842. The cubic root of 16453919 is about 254.3449495135.

The spelling of 16453919 in words is "sixteen million, four hundred fifty-three thousand, nine hundred nineteen".