11821310394 has 8 divisors (see below), whose sum is σ = 23642620800. Its totient is φ = 3940436796.

The previous prime is 11821310381. The next prime is 11821310399. The reversal of 11821310394 is 49301312811.

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

11821310394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11821310399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985109194 + ... + 985109205.

It is an arithmetic number, because the mean of its divisors is an integer number (2955327600).

Almost surely, 2^11821310394 is an apocalyptic number.

11821310394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11821310394 is a wasteful number, since it uses less digits than its factorization.

11821310394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970218404.

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 11821310394 in words is "eleven billion, eight hundred twenty-one million, three hundred ten thousand, three hundred ninety-four".