16718461 has 4 divisors (see below), whose sum is σ = 17598400. Its totient is φ = 15838524.

The previous prime is 16718419. The next prime is 16718473. The reversal of 16718461 is 16481761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16481761 = 37 ⋅445453.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16718461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16718491) 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 in 3 ways as a sum of consecutive naturals, for example, 439941 + ... + 439978.

It is an arithmetic number, because the mean of its divisors is an integer number (4399600).

Almost surely, 2^16718461 is an apocalyptic number.

It is an amenable number.

16718461 is a deficient number, since it is larger than the sum of its proper divisors (879939).

16718461 is an equidigital number, since it uses as much as digits as its factorization.

16718461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879938.

The product of its digits is 8064, while the sum is 34.

The square root of 16718461 is about 4088.8214683451. The cubic root of 16718461 is about 255.7008070790.

The spelling of 16718461 in words is "sixteen million, seven hundred eighteen thousand, four hundred sixty-one".