1820618088815 has 32 divisors (see below), whose sum is σ = 2318124142656. Its totient is φ = 1367936501760.

The previous prime is 1820618088721. The next prime is 1820618088833. The reversal of 1820618088815 is 5188808160281.

It is not a de Polignac number, because 1820618088815 - 2²² = 1820613894511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83607269 + ... + 83629041.

It is an arithmetic number, because the mean of its divisors is an integer number (72441379458).

Almost surely, 2^{1820618088815} is an apocalyptic number.

1820618088815 is a deficient number, since it is larger than the sum of its proper divisors (497506053841).

1820618088815 is a wasteful number, since it uses less digits than its factorization.

1820618088815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819.

The product of its (nonzero) digits is 1966080, while the sum is 56.

The spelling of 1820618088815 in words is "one trillion, eight hundred twenty billion, six hundred eighteen million, eighty-eight thousand, eight hundred fifteen".