16041865 has 24 divisors (see below), whose sum is σ = 22953672. Its totient is φ = 10725120.

The previous prime is 16041859. The next prime is 16041887. The reversal of 16041865 is 56814061.

It can be written as a sum of positive squares in 4 ways, for example, as 233289 + 15808576 = 483^2 + 3976^2 .

It is not a de Polignac number, because 16041865 - 2⁷ = 16041737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9247 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (956403).

Almost surely, 2^16041865 is an apocalyptic number.

It is an amenable number.

16041865 is a deficient number, since it is larger than the sum of its proper divisors (6911807).

16041865 is a wasteful number, since it uses less digits than its factorization.

16041865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 16041865 is about 4005.2297062715. The cubic root of 16041865 is about 252.2037960481.

It can be divided in two parts, 160 and 41865, that added together give a square (42025 = 205²).

The spelling of 16041865 in words is "sixteen million, forty-one thousand, eight hundred sixty-five".