1018981788044 has 24 divisors (see below), whose sum is σ = 2012409176400. Its totient is φ = 447202038080.

The previous prime is 1018981788007. The next prime is 1018981788049. The reversal of 1018981788044 is 4408871898101.

It is not an unprimeable number, because it can be changed into a prime (1018981788049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399286259 + ... + 399288810.

It is an arithmetic number, because the mean of its divisors is an integer number (83850382350).

Almost surely, 2^{1018981788044} is an apocalyptic number.

It is an amenable number.

1018981788044 is a deficient number, since it is larger than the sum of its proper divisors (993427388356).

1018981788044 is a wasteful number, since it uses less digits than its factorization.

1018981788044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798575113 (or 798575111 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 59.

The spelling of 1018981788044 in words is "one trillion, eighteen billion, nine hundred eighty-one million, seven hundred eighty-eight thousand, forty-four".