18205560046 has 4 divisors (see below), whose sum is σ = 27308340072. Its totient is φ = 9102780022.

The previous prime is 18205560041. The next prime is 18205560067. The reversal of 18205560046 is 64006550281.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18205559987 and 18205560014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18205560041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4551390010 + ... + 4551390013.

It is an arithmetic number, because the mean of its divisors is an integer number (6827085018).

Almost surely, 2^18205560046 is an apocalyptic number.

18205560046 is a deficient number, since it is larger than the sum of its proper divisors (9102780026).

18205560046 is an equidigital number, since it uses as much as digits as its factorization.

18205560046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102780025.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 18205560046 in words is "eighteen billion, two hundred five million, five hundred sixty thousand, forty-six".