1836381820213 has 8 divisors (see below), whose sum is σ = 1881207470016. Its totient is φ = 1791557877600.

The previous prime is 1836381820211. The next prime is 1836381820241. The reversal of 1836381820213 is 3120281836381.

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

It is not a de Polignac number, because 1836381820213 - 2¹ = 1836381820211 is a prime.

It is a super-2 number, since 2×1836381820213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836381820211) 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, 1904320 + ... + 2701702.

It is an arithmetic number, because the mean of its divisors is an integer number (235150933752).

Almost surely, 2^{1836381820213} is an apocalyptic number.

It is an amenable number.

1836381820213 is a deficient number, since it is larger than the sum of its proper divisors (44825649803).

1836381820213 is an equidigital number, since it uses as much as digits as its factorization.

1836381820213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853595.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 1836381820213 in words is "one trillion, eight hundred thirty-six billion, three hundred eighty-one million, eight hundred twenty thousand, two hundred thirteen".