16808157 has 6 divisors (see below), whose sum is σ = 24278462. Its totient is φ = 11205432.

The previous prime is 16808111. The next prime is 16808159. The reversal of 16808157 is 75180861.

It can be written as a sum of positive squares in only one way, i.e., 16597476 + 210681 = 4074^2 + 459^2 .

It is not a de Polignac number, because 16808157 - 2¹⁴ = 16791773 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 (16808159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 933778 + ... + 933795.

Almost surely, 2^16808157 is an apocalyptic number.

It is an amenable number.

16808157 is a deficient number, since it is larger than the sum of its proper divisors (7470305).

16808157 is a wasteful number, since it uses less digits than its factorization.

16808157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867579 (or 1867576 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 16808157 is about 4099.7752377417. The cubic root of 16808157 is about 256.1572774186.

The spelling of 16808157 in words is "sixteen million, eight hundred eight thousand, one hundred fifty-seven".