16853857 has 2 divisors, whose sum is σ = 16853858. Its totient is φ = 16853856.

The previous prime is 16853849. The next prime is 16853861. The reversal of 16853857 is 75835861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16329681 + 524176 = 4041^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 16853857 - 2³ = 16853849 is a prime.

It is not a weakly prime, because it can be changed into another prime (16853957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426928 + 8426929.

It is an arithmetic number, because the mean of its divisors is an integer number (8426929).

Almost surely, 2^16853857 is an apocalyptic number.

It is an amenable number.

16853857 is a deficient number, since it is larger than the sum of its proper divisors (1).

16853857 is an equidigital number, since it uses as much as digits as its factorization.

16853857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 16853857 is about 4105.3449306971. The cubic root of 16853857 is about 256.3892242050.

The spelling of 16853857 in words is "sixteen million, eight hundred fifty-three thousand, eight hundred fifty-seven".