918190909999 has 8 divisors (see below), whose sum is σ = 1045213368192. Its totient is φ = 798426878040.

The previous prime is 918190909991. The next prime is 918190910027. The reversal of 918190909999 is 999909091819.

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

It is not a de Polignac number, because 918190909999 - 2³ = 918190909991 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 (918190909991) 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, 1814606289 + ... + 1814606794.

It is an arithmetic number, because the mean of its divisors is an integer number (130651671024).

Almost surely, 2^918190909999 is an apocalyptic number.

918190909999 is a deficient number, since it is larger than the sum of its proper divisors (127022458193).

918190909999 is a wasteful number, since it uses less digits than its factorization.

918190909999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629213117.

The product of its (nonzero) digits is 38263752, while the sum is 73.

The spelling of 918190909999 in words is "nine hundred eighteen billion, one hundred ninety million, nine hundred nine thousand, nine hundred ninety-nine".