182818192921 has 28 divisors (see below), whose sum is σ = 229696295332. Its totient is φ = 144646151328.

The previous prime is 182818192903. The next prime is 182818192937. The reversal of 182818192921 is 129291818281.

It can be written as a sum of positive squares in 2 ways, for example, as 53603825625 + 129214367296 = 231525^2 + 359464^2 .

It is not a de Polignac number, because 182818192921 - 2¹³ = 182818184729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (182818172921) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1469671 + ... + 1589203.

It is an arithmetic number, because the mean of its divisors is an integer number (8203439119).

Almost surely, 2^182818192921 is an apocalyptic number.

It is an amenable number.

182818192921 is a deficient number, since it is larger than the sum of its proper divisors (46878102411).

182818192921 is an frugal number, since it uses more digits than its factorization.

182818192921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119588 (or 119553 counting only the distinct ones).

The product of its digits is 331776, while the sum is 52.

The spelling of 182818192921 in words is "one hundred eighty-two billion, eight hundred eighteen million, one hundred ninety-two thousand, nine hundred twenty-one".