16930493 has 2 divisors, whose sum is σ = 16930494. Its totient is φ = 16930492.

The previous prime is 16930471. The next prime is 16930513. The reversal of 16930493 is 39403961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 8421604 = 2917^2 + 2902^2 .

It is an emirp because it is prime and its reverse (39403961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16930493 - 2⁸ = 16930237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16930393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8465246 + 8465247.

It is an arithmetic number, because the mean of its divisors is an integer number (8465247).

Almost surely, 2^16930493 is an apocalyptic number.

It is an amenable number.

16930493 is a deficient number, since it is larger than the sum of its proper divisors (1).

16930493 is an equidigital number, since it uses as much as digits as its factorization.

16930493 is an evil number, because the sum of its binary digits is even.

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

The square root of 16930493 is about 4114.6680303519. The cubic root of 16930493 is about 256.7772449453. Note that the first 3 decimals are identical.

The spelling of 16930493 in words is "sixteen million, nine hundred thirty thousand, four hundred ninety-three".