16430993 has 8 divisors (see below), whose sum is σ = 18154368. Its totient is φ = 14791744.

The previous prime is 16430989. The next prime is 16431017. The reversal of 16430993 is 39903461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16430993 - 2² = 16430989 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16430933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20621 + ... + 21402.

It is an arithmetic number, because the mean of its divisors is an integer number (2269296).

Almost surely, 2^16430993 is an apocalyptic number.

It is an amenable number.

16430993 is a deficient number, since it is larger than the sum of its proper divisors (1723375).

16430993 is a wasteful number, since it uses less digits than its factorization.

16430993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42063.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 16430993 is about 4053.5161280054. The cubic root of 16430993 is about 254.2267644444.

The spelling of 16430993 in words is "sixteen million, four hundred thirty thousand, nine hundred ninety-three".