918390101909 has 8 divisors (see below), whose sum is σ = 1071008865600. Its totient is φ = 787191515628.

The previous prime is 918390101801. The next prime is 918390101917. The reversal of 918390101909 is 909101093819.

It is not a de Polignac number, because 918390101909 - 2¹⁶ = 918390036373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918390101939) 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, 1338760739 + ... + 1338761424.

It is an arithmetic number, because the mean of its divisors is an integer number (133876108200).

Almost surely, 2^918390101909 is an apocalyptic number.

It is an amenable number.

918390101909 is a deficient number, since it is larger than the sum of its proper divisors (152618763691).

918390101909 is an equidigital number, since it uses as much as digits as its factorization.

918390101909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677522184 (or 2677522170 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 50.

The spelling of 918390101909 in words is "nine hundred eighteen billion, three hundred ninety million, one hundred one thousand, nine hundred nine".