3818182875621 has 8 divisors (see below), whose sum is σ = 5090924457600. Its totient is φ = 2545448272032.

The previous prime is 3818182875613. The next prime is 3818182875701. The reversal of 3818182875621 is 1265782818183.

It is a happy number.

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

It is not a de Polignac number, because 3818182875621 - 2³ = 3818182875613 is a prime.

It is a super-2 number, since 2×3818182875621² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818182865621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296125 + ... + 2779218.

It is an arithmetic number, because the mean of its divisors is an integer number (636365557200).

Almost surely, 2^{3818182875621} is an apocalyptic number.

It is an amenable number.

3818182875621 is a deficient number, since it is larger than the sum of its proper divisors (1272741581979).

3818182875621 is a wasteful number, since it uses less digits than its factorization.

3818182875621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489195.

The product of its digits is 10321920, while the sum is 60.

The spelling of 3818182875621 in words is "three trillion, eight hundred eighteen billion, one hundred eighty-two million, eight hundred seventy-five thousand, six hundred twenty-one".