18656041 has 4 divisors (see below), whose sum is σ = 18686800. Its totient is φ = 18625284.

The previous prime is 18656009. The next prime is 18656069. The reversal of 18656041 is 14065681.

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 18656041 - 2⁵ = 18656009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18655994 and 18656012.

It is not an unprimeable number, because it can be changed into a prime (18650041) 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, 14451 + ... + 15688.

It is an arithmetic number, because the mean of its divisors is an integer number (4671700).

Almost surely, 2^18656041 is an apocalyptic number.

It is an amenable number.

18656041 is a deficient number, since it is larger than the sum of its proper divisors (30759).

18656041 is an equidigital number, since it uses as much as digits as its factorization.

18656041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30758.

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

The square root of 18656041 is about 4319.2639419234. The cubic root of 18656041 is about 265.2201374782.

The spelling of 18656041 in words is "eighteen million, six hundred fifty-six thousand, forty-one".