16819057 has 2 divisors, whose sum is σ = 16819058. Its totient is φ = 16819056.

The previous prime is 16819051. The next prime is 16819067. The reversal of 16819057 is 75091861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16573041 + 246016 = 4071^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 16819057 - 2¹⁹ = 16294769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16819051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8409528 + 8409529.

It is an arithmetic number, because the mean of its divisors is an integer number (8409529).

Almost surely, 2^16819057 is an apocalyptic number.

It is an amenable number.

16819057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16819057 is an equidigital number, since it uses as much as digits as its factorization.

16819057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 16819057 is about 4101.1043634611. The cubic root of 16819057 is about 256.2126376619.

The spelling of 16819057 in words is "sixteen million, eight hundred nineteen thousand, fifty-seven".