1818365783811 has 8 divisors (see below), whose sum is σ = 2483621558544. Its totient is φ = 1182676932480.

The previous prime is 1818365783809. The next prime is 1818365783821. The reversal of 1818365783811 is 1183875638181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1818365783811 - 2¹ = 1818365783809 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1818365783821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7391730706 + ... + 7391730951.

It is an arithmetic number, because the mean of its divisors is an integer number (310452694818).

Almost surely, 2^{1818365783811} is an apocalyptic number.

1818365783811 is a deficient number, since it is larger than the sum of its proper divisors (665255774733).

1818365783811 is a wasteful number, since it uses less digits than its factorization.

1818365783811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14783461701.

The product of its digits is 7741440, while the sum is 60.

The spelling of 1818365783811 in words is "one trillion, eight hundred eighteen billion, three hundred sixty-five million, seven hundred eighty-three thousand, eight hundred eleven".