1818201820202 has 8 divisors (see below), whose sum is σ = 2727327498336. Its totient is φ = 909092654092.

The previous prime is 1818201820157. The next prime is 1818201820249. The reversal of 1818201820202 is 2020281028181.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3848948 + ... + 4295439.

It is an arithmetic number, because the mean of its divisors is an integer number (340915937292).

Almost surely, 2^{1818201820202} is an apocalyptic number.

1818201820202 is a deficient number, since it is larger than the sum of its proper divisors (909125678134).

1818201820202 is a wasteful number, since it uses less digits than its factorization.

1818201820202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256012.

The product of its (nonzero) digits is 8192, while the sum is 35.

Adding to 1818201820202 its reverse (2020281028181), we get a palindrome (3838482848383).

The spelling of 1818201820202 in words is "one trillion, eight hundred eighteen billion, two hundred one million, eight hundred twenty thousand, two hundred two".