16802881 has 2 divisors, whose sum is σ = 16802882. Its totient is φ = 16802880.

The previous prime is 16802873. The next prime is 16802887. The reversal of 16802881 is 18820861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 33856 = 4095^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 16802881 - 2³ = 16802873 is a prime.

It is a super-2 number, since 2×16802881² = 564673619800322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16802887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8401440 + 8401441.

It is an arithmetic number, because the mean of its divisors is an integer number (8401441).

Almost surely, 2^16802881 is an apocalyptic number.

It is an amenable number.

16802881 is a deficient number, since it is larger than the sum of its proper divisors (1).

16802881 is an equidigital number, since it uses as much as digits as its factorization.

16802881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 16802881 is about 4099.1317373317. The cubic root of 16802881 is about 256.1304724328.

The spelling of 16802881 in words is "sixteen million, eight hundred two thousand, eight hundred eighty-one".