16980493 has 2 divisors, whose sum is σ = 16980494. Its totient is φ = 16980492.

The previous prime is 16980451. The next prime is 16980499. The reversal of 16980493 is 39408961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 956484 = 4003^2 + 978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16980493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16980499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8490246 + 8490247.

It is an arithmetic number, because the mean of its divisors is an integer number (8490247).

Almost surely, 2^16980493 is an apocalyptic number.

It is an amenable number.

16980493 is a deficient number, since it is larger than the sum of its proper divisors (1).

16980493 is an equidigital number, since it uses as much as digits as its factorization.

16980493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 16980493 is about 4120.7393754034. The cubic root of 16980493 is about 257.0297724243.

The spelling of 16980493 in words is "sixteen million, nine hundred eighty thousand, four hundred ninety-three".