1836381911011 has 4 divisors (see below), whose sum is σ = 1836386857224. Its totient is φ = 1836376964800.

The previous prime is 1836381910999. The next prime is 1836381911027. The reversal of 1836381911011 is 1101191836381.

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

It is a cyclic number.

It is not a de Polignac number, because 1836381911011 - 2²¹ = 1836379813859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1836381911041) 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, 1866625 + ... + 2675266.

It is an arithmetic number, because the mean of its divisors is an integer number (459096714306).

Almost surely, 2^{1836381911011} is an apocalyptic number.

1836381911011 is a deficient number, since it is larger than the sum of its proper divisors (4946213).

1836381911011 is an equidigital number, since it uses as much as digits as its factorization.

1836381911011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946212.

The product of its (nonzero) digits is 31104, while the sum is 43.

The spelling of 1836381911011 in words is "one trillion, eight hundred thirty-six billion, three hundred eighty-one million, nine hundred eleven thousand, eleven".