18247192394 has 16 divisors (see below), whose sum is σ = 28143362400. Its totient is φ = 8866647504.

The previous prime is 18247192391. The next prime is 18247192417. The reversal of 18247192394 is 49329174281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18247192391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79964 + ... + 207095.

It is an arithmetic number, because the mean of its divisors is an integer number (1758960150).

Almost surely, 2^18247192394 is an apocalyptic number.

18247192394 is a deficient number, since it is larger than the sum of its proper divisors (9896170006).

18247192394 is a wasteful number, since it uses less digits than its factorization.

18247192394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287957.

The product of its digits is 870912, while the sum is 50.

The spelling of 18247192394 in words is "eighteen billion, two hundred forty-seven million, one hundred ninety-two thousand, three hundred ninety-four".