18281194379 has 8 divisors (see below), whose sum is σ = 20895621600. Its totient is φ = 15667474176.

The previous prime is 18281194369. The next prime is 18281194387. The reversal of 18281194379 is 97349118281.

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 18281194379 - 2¹⁶ = 18281128843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18281194379.

It is not an unprimeable number, because it can be changed into a prime (18281194369) 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, 120134 + ... + 225819.

It is an arithmetic number, because the mean of its divisors is an integer number (2611952700).

Almost surely, 2^18281194379 is an apocalyptic number.

18281194379 is a deficient number, since it is larger than the sum of its proper divisors (2614427221).

18281194379 is an equidigital number, since it uses as much as digits as its factorization.

18281194379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353509.

The product of its digits is 870912, while the sum is 53.

The spelling of 18281194379 in words is "eighteen billion, two hundred eighty-one million, one hundred ninety-four thousand, three hundred seventy-nine".