18225540466 has 32 divisors (see below), whose sum is σ = 31848318720. Its totient is φ = 7659951936.

The previous prime is 18225540461. The next prime is 18225540467. The reversal of 18225540466 is 66404552281.

It is not an unprimeable number, because it can be changed into a prime (18225540461) 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 15 ways as a sum of consecutive naturals, for example, 2065035 + ... + 2073841.

It is an arithmetic number, because the mean of its divisors is an integer number (995259960).

Almost surely, 2^18225540466 is an apocalyptic number.

18225540466 is a deficient number, since it is larger than the sum of its proper divisors (13622778254).

18225540466 is a wasteful number, since it uses less digits than its factorization.

18225540466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 18225540466 in words is "eighteen billion, two hundred twenty-five million, five hundred forty thousand, four hundred sixty-six".