1818364638382 has 4 divisors (see below), whose sum is σ = 2727546957576. Its totient is φ = 909182319190.

The previous prime is 1818364638359. The next prime is 1818364638397. The reversal of 1818364638382 is 2838364638181.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1818364638382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454591159594 + ... + 454591159597.

It is an arithmetic number, because the mean of its divisors is an integer number (681886739394).

Almost surely, 2^{1818364638382} is an apocalyptic number.

1818364638382 is a deficient number, since it is larger than the sum of its proper divisors (909182319194).

1818364638382 is an equidigital number, since it uses as much as digits as its factorization.

1818364638382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909182319193.

The product of its digits is 31850496, while the sum is 61.

The spelling of 1818364638382 in words is "one trillion, eight hundred eighteen billion, three hundred sixty-four million, six hundred thirty-eight thousand, three hundred eighty-two".