1811996683 has 4 divisors (see below), whose sum is σ = 2070853360. Its totient is φ = 1553140008.

The previous prime is 1811996639. The next prime is 1811996699. The reversal of 1811996683 is 3866991181.

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

It is not a de Polignac number, because 1811996683 - 2¹³ = 1811988491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1811996683.

It is not an unprimeable number, because it can be changed into a prime (1811996083) 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, 129428328 + ... + 129428341.

It is an arithmetic number, because the mean of its divisors is an integer number (517713340).

Almost surely, 2^1811996683 is an apocalyptic number.

1811996683 is a deficient number, since it is larger than the sum of its proper divisors (258856677).

1811996683 is an equidigital number, since it uses as much as digits as its factorization.

1811996683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258856676.

The product of its digits is 559872, while the sum is 52.

The square root of 1811996683 is about 42567.5543460040. The cubic root of 1811996683 is about 1219.1368711310.

The spelling of 1811996683 in words is "one billion, eight hundred eleven million, nine hundred ninety-six thousand, six hundred eighty-three".