16865113 has 4 divisors (see below), whose sum is σ = 16873488. Its totient is φ = 16856740.

The previous prime is 16865089. The next prime is 16865119. The reversal of 16865113 is 31156861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31156861 = 659 ⋅47279.

It is a cyclic number.

It is not a de Polignac number, because 16865113 - 2¹³ = 16856921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16865119) 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 3 ways as a sum of consecutive naturals, for example, 870 + ... + 5872.

It is an arithmetic number, because the mean of its divisors is an integer number (4218372).

Almost surely, 2^16865113 is an apocalyptic number.

It is an amenable number.

16865113 is a deficient number, since it is larger than the sum of its proper divisors (8375).

16865113 is an equidigital number, since it uses as much as digits as its factorization.

16865113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374.

The product of its digits is 4320, while the sum is 31.

The square root of 16865113 is about 4106.7155976522. The cubic root of 16865113 is about 256.4462887864.

The spelling of 16865113 in words is "sixteen million, eight hundred sixty-five thousand, one hundred thirteen".