18154349179 has 4 divisors (see below), whose sum is σ = 18155255976. Its totient is φ = 18153442384.

The previous prime is 18154349149. The next prime is 18154349237. The reversal of 18154349179 is 97194345181.

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

It is a cyclic number.

It is not a de Polignac number, because 18154349179 - 2¹⁷ = 18154218107 is a prime.

It is a super-2 number, since 2×18154349179² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18154349149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422674 + ... + 463639.

It is an arithmetic number, because the mean of its divisors is an integer number (4538813994).

Almost surely, 2^18154349179 is an apocalyptic number.

18154349179 is a deficient number, since it is larger than the sum of its proper divisors (906797).

18154349179 is an equidigital number, since it uses as much as digits as its factorization.

18154349179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906796.

The product of its digits is 1088640, while the sum is 52.

The spelling of 18154349179 in words is "eighteen billion, one hundred fifty-four million, three hundred forty-nine thousand, one hundred seventy-nine".