16653919 has 2 divisors, whose sum is σ = 16653920. Its totient is φ = 16653918.

The previous prime is 16653893. The next prime is 16653929. The reversal of 16653919 is 91935661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16653919 - 2⁵ = 16653887 is a prime.

It is a super-2 number, since 2×16653919² = 554706036117122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16653929) 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 as a sum of consecutive naturals, namely, 8326959 + 8326960.

It is an arithmetic number, because the mean of its divisors is an integer number (8326960).

Almost surely, 2^16653919 is an apocalyptic number.

16653919 is a deficient number, since it is larger than the sum of its proper divisors (1).

16653919 is an equidigital number, since it uses as much as digits as its factorization.

16653919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 16653919 is about 4080.9213420501. The cubic root of 16653919 is about 255.3713364724.

The spelling of 16653919 in words is "sixteen million, six hundred fifty-three thousand, nine hundred nineteen".