18166344235 has 8 divisors (see below), whose sum is σ = 23476506480. Its totient is φ = 13415146464.

The previous prime is 18166344197. The next prime is 18166344253. The reversal of 18166344235 is 53244366181.

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 18166344235 - 2⁷ = 18166344107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18166344191 and 18166344200.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 139741045 + ... + 139741174.

It is an arithmetic number, because the mean of its divisors is an integer number (2934563310).

Almost surely, 2^18166344235 is an apocalyptic number.

18166344235 is a deficient number, since it is larger than the sum of its proper divisors (5310162245).

18166344235 is a wasteful number, since it uses less digits than its factorization.

18166344235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279482237.

The product of its digits is 414720, while the sum is 43.

The spelling of 18166344235 in words is "eighteen billion, one hundred sixty-six million, three hundred forty-four thousand, two hundred thirty-five".