918191910001 has 12 divisors (see below), whose sum is σ = 949670230512. Its totient is φ = 887726385000.

The previous prime is 918191909969. The next prime is 918191910047. The reversal of 918191910001 is 100019191819.

It is not a de Polignac number, because 918191910001 - 2⁵ = 918191909969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918191910091) 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 in 11 ways as a sum of consecutive naturals, for example, 555466 + ... + 1464556.

It is an arithmetic number, because the mean of its divisors is an integer number (79139185876).

Almost surely, 2^918191910001 is an apocalyptic number.

It is an amenable number.

918191910001 is a deficient number, since it is larger than the sum of its proper divisors (31478320511).

918191910001 is a wasteful number, since it uses less digits than its factorization.

918191910001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910204 (or 910173 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 40.

The spelling of 918191910001 in words is "nine hundred eighteen billion, one hundred ninety-one million, nine hundred ten thousand, one".