91673118 has 48 divisors (see below), whose sum is σ = 208915200. Its totient is φ = 29010240.

The previous prime is 91673117. The next prime is 91673123. The reversal of 91673118 is 81137619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91673111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30403 + ... + 33281.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^91673118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91673118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104457600).

91673118 is an abundant number, since it is smaller than the sum of its proper divisors (117242082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91673118 is a wasteful number, since it uses less digits than its factorization.

91673118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977 (or 2974 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 91673118 is about 9574.6079815311. The cubic root of 91673118 is about 450.9004488542.

The spelling of 91673118 in words is "ninety-one million, six hundred seventy-three thousand, one hundred eighteen".