1018923089209 has 8 divisors (see below), whose sum is σ = 1072949540000. Its totient is φ = 964936530432.

The previous prime is 1018923089203. The next prime is 1018923089213. The reversal of 1018923089209 is 9029803298101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1018923089209 - 2⁷ = 1018923089081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018923089203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9920559 + ... + 10022740.

It is an arithmetic number, because the mean of its divisors is an integer number (134118692500).

Almost surely, 2^{1018923089209} is an apocalyptic number.

1018923089209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1018923089209 is a deficient number, since it is larger than the sum of its proper divisors (54026450791).

1018923089209 is a wasteful number, since it uses less digits than its factorization.

1018923089209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19946007.

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 1018923089209 in words is "one trillion, eighteen billion, nine hundred twenty-three million, eighty-nine thousand, two hundred nine".