16491453 has 24 divisors (see below), whose sum is σ = 24399648. Its totient is φ = 9900000.

The previous prime is 16491443. The next prime is 16491467. The reversal of 16491453 is 35419461.

It is not a de Polignac number, because 16491453 - 2⁹ = 16490941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16491443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65578 + ... + 65828.

It is an arithmetic number, because the mean of its divisors is an integer number (1016652).

Almost surely, 2^16491453 is an apocalyptic number.

It is an amenable number.

16491453 is a deficient number, since it is larger than the sum of its proper divisors (7908195).

16491453 is a wasteful number, since it uses less digits than its factorization.

16491453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 446 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 16491453 is about 4060.9670030671. The cubic root of 16491453 is about 254.5382030363.

The spelling of 16491453 in words is "sixteen million, four hundred ninety-one thousand, four hundred fifty-three".