18275986466 has 4 divisors (see below), whose sum is σ = 27413979702. Its totient is φ = 9137993232.

The previous prime is 18275986427. The next prime is 18275986471. The reversal of 18275986466 is 66468957281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66468957281 = 238369 ⋅278849.

It can be written as a sum of positive squares in only one way, i.e., 16849338025 + 1426648441 = 129805^2 + 37771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18275986399 and 18275986408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4568996615 + ... + 4568996618.

Almost surely, 2^18275986466 is an apocalyptic number.

18275986466 is a deficient number, since it is larger than the sum of its proper divisors (9137993236).

18275986466 is an equidigital number, since it uses as much as digits as its factorization.

18275986466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137993235.

The product of its digits is 34836480, while the sum is 62.

The spelling of 18275986466 in words is "eighteen billion, two hundred seventy-five million, nine hundred eighty-six thousand, four hundred sixty-six".