18201044642 has 32 divisors (see below), whose sum is σ = 31376116800. Its totient is φ = 7831512000.

The previous prime is 18201044621. The next prime is 18201044657. The reversal of 18201044642 is 24644010281.

It is a junction number, because it is equal to n+sod(n) for n = 18201044599 and 18201044608.

It is an unprimeable number.

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, 527084 + ... + 560552.

It is an arithmetic number, because the mean of its divisors is an integer number (980503650).

Almost surely, 2^18201044642 is an apocalyptic number.

18201044642 is a deficient number, since it is larger than the sum of its proper divisors (13175072158).

18201044642 is a wasteful number, since it uses less digits than its factorization.

18201044642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34802.

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 18201044642 in words is "eighteen billion, two hundred one million, forty-four thousand, six hundred forty-two".