3818182874221 has 8 divisors (see below), whose sum is σ = 3947717369600. Its totient is φ = 3689046335520.

The previous prime is 3818182874203. The next prime is 3818182874243. The reversal of 3818182874221 is 1224782818183.

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

It is a cyclic number.

It is not a de Polignac number, because 3818182874221 - 2³³ = 3809592939629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818182874281) 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, 99469656 + ... + 99508033.

It is an arithmetic number, because the mean of its divisors is an integer number (493464671200).

Almost surely, 2^{3818182874221} is an apocalyptic number.

3818182874221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3818182874221 is a deficient number, since it is larger than the sum of its proper divisors (129534495379).

3818182874221 is a wasteful number, since it uses less digits than its factorization.

3818182874221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198978339.

The product of its digits is 2752512, while the sum is 55.

The spelling of 3818182874221 in words is "three trillion, eight hundred eighteen billion, one hundred eighty-two million, eight hundred seventy-four thousand, two hundred twenty-one".