16418261 has 4 divisors (see below), whose sum is σ = 17282400. Its totient is φ = 15554124.

The previous prime is 16418249. The next prime is 16418267. The reversal of 16418261 is 16281461.

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.

It is a cyclic number.

It is not a de Polignac number, because 16418261 - 2⁶ = 16418197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16418267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432041 + ... + 432078.

It is an arithmetic number, because the mean of its divisors is an integer number (4320600).

Almost surely, 2^16418261 is an apocalyptic number.

It is an amenable number.

16418261 is a deficient number, since it is larger than the sum of its proper divisors (864139).

16418261 is an equidigital number, since it uses as much as digits as its factorization.

16418261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864138.

The product of its digits is 2304, while the sum is 29.

The square root of 16418261 is about 4051.9453352680. The cubic root of 16418261 is about 254.1610826448.

The spelling of 16418261 in words is "sixteen million, four hundred eighteen thousand, two hundred sixty-one".