16819349 has 4 divisors (see below), whose sum is σ = 17273964. Its totient is φ = 16364736.

The previous prime is 16819343. The next prime is 16819379. The reversal of 16819349 is 94391861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7879249 + 8940100 = 2807^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 16819349 - 2¹⁶ = 16753813 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 (16819343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227252 + ... + 227325.

It is an arithmetic number, because the mean of its divisors is an integer number (4318491).

Almost surely, 2^16819349 is an apocalyptic number.

It is an amenable number.

16819349 is a deficient number, since it is larger than the sum of its proper divisors (454615).

16819349 is an equidigital number, since it uses as much as digits as its factorization.

16819349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454614.

The product of its digits is 46656, while the sum is 41.

The square root of 16819349 is about 4101.1399634736. The cubic root of 16819349 is about 256.2141203780.

The spelling of 16819349 in words is "sixteen million, eight hundred nineteen thousand, three hundred forty-nine".