16813453 has 2 divisors, whose sum is σ = 16813454. Its totient is φ = 16813452.

The previous prime is 16813399. The next prime is 16813463. The reversal of 16813453 is 35431861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16016004 + 797449 = 4002^2 + 893^2 .

It is a cyclic number.

It is not a de Polignac number, because 16813453 - 2⁹ = 16812941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16813463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8406726 + 8406727.

It is an arithmetic number, because the mean of its divisors is an integer number (8406727).

Almost surely, 2^16813453 is an apocalyptic number.

It is an amenable number.

16813453 is a deficient number, since it is larger than the sum of its proper divisors (1).

16813453 is an equidigital number, since it uses as much as digits as its factorization.

16813453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 16813453 is about 4100.4210759384. The cubic root of 16813453 is about 256.1841783748.

The spelling of 16813453 in words is "sixteen million, eight hundred thirteen thousand, four hundred fifty-three".