1018382009109 has 32 divisors (see below), whose sum is σ = 1452545602560. Its totient is φ = 632770588800.

The previous prime is 1018382009107. The next prime is 1018382009137. The reversal of 1018382009109 is 9019002838101.

It is not a de Polignac number, because 1018382009109 - 2¹ = 1018382009107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018382009101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1620529 + ... + 2159369.

It is an arithmetic number, because the mean of its divisors is an integer number (45392050080).

Almost surely, 2^{1018382009109} is an apocalyptic number.

1018382009109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1018382009109 is a deficient number, since it is larger than the sum of its proper divisors (434163593451).

1018382009109 is a wasteful number, since it uses less digits than its factorization.

1018382009109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539401.

The product of its (nonzero) digits is 31104, while the sum is 42.

The spelling of 1018382009109 in words is "one trillion, eighteen billion, three hundred eighty-two million, nine thousand, one hundred nine".