18045378626 has 32 divisors (see below), whose sum is σ = 30819833856. Its totient is φ = 7851376000.

The previous prime is 18045378613. The next prime is 18045378661. The reversal of 18045378626 is 62687354081.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 140930 + ... + 236541.

It is an arithmetic number, because the mean of its divisors is an integer number (963119808).

Almost surely, 2^18045378626 is an apocalyptic number.

18045378626 is a deficient number, since it is larger than the sum of its proper divisors (12774455230).

18045378626 is a wasteful number, since it uses less digits than its factorization.

18045378626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377578.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 18045378626 in words is "eighteen billion, forty-five million, three hundred seventy-eight thousand, six hundred twenty-six".