1011018109 has 2 divisors, whose sum is σ = 1011018110. Its totient is φ = 1011018108.

The previous prime is 1011018091. The next prime is 1011018131. The reversal of 1011018109 is 9018101101.

Together with previous prime (1011018091) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (1011018131) can be obtained adding 1011018109 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797215225 + 213802884 = 28235^2 + 14622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011018109 - 2¹³ = 1011009917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011018109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011618109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505509054 + 505509055.

It is an arithmetic number, because the mean of its divisors is an integer number (505509055).

Almost surely, 2^1011018109 is an apocalyptic number.

It is an amenable number.

1011018109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011018109 is an equidigital number, since it uses as much as digits as its factorization.

1011018109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The square root of 1011018109 is about 31796.5109563927. The cubic root of 1011018109 is about 1003.6592962180.

The spelling of 1011018109 in words is "one billion, eleven million, eighteen thousand, one hundred nine".