918372909091 has 32 divisors (see below), whose sum is σ = 1049339432448. Its totient is φ = 795594666240.

The previous prime is 918372909089. The next prime is 918372909101. The reversal of 918372909091 is 190909273819.

It is not a de Polignac number, because 918372909091 - 2¹ = 918372909089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918372909031) 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 31 ways as a sum of consecutive naturals, for example, 255598791 + ... + 255602383.

It is an arithmetic number, because the mean of its divisors is an integer number (32791857264).

Almost surely, 2^918372909091 is an apocalyptic number.

918372909091 is a deficient number, since it is larger than the sum of its proper divisors (130966523357).

918372909091 is a wasteful number, since it uses less digits than its factorization.

918372909091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The spelling of 918372909091 in words is "nine hundred eighteen billion, three hundred seventy-two million, nine hundred nine thousand, ninety-one".