1818382829291 has 6 divisors (see below), whose sum is σ = 2115261658620. Its totient is φ = 1558613853636.

The previous prime is 1818382829267. The next prime is 1818382829321. The reversal of 1818382829291 is 1929282838181.

It is not a de Polignac number, because 1818382829291 - 2³⁰ = 1817309087467 is a prime.

It is a super-2 number, since 2×1818382829291² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818382823291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18554926781 + ... + 18554926878.

It is an arithmetic number, because the mean of its divisors is an integer number (352543609770).

Almost surely, 2^{1818382829291} is an apocalyptic number.

1818382829291 is a deficient number, since it is larger than the sum of its proper divisors (296878829329).

1818382829291 is an equidigital number, since it uses as much as digits as its factorization.

1818382829291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37109853673 (or 37109853666 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 62.

The spelling of 1818382829291 in words is "one trillion, eight hundred eighteen billion, three hundred eighty-two million, eight hundred twenty-nine thousand, two hundred ninety-one".