91119816 has 40 divisors (see below), whose sum is σ = 255221670. Its totient is φ = 30373056.

The previous prime is 91119811. The next prime is 91119823. The reversal of 91119816 is 61891119.

It can be written as a sum of positive squares in only one way, i.e., 80030916 + 11088900 = 8946^2 + 3330^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (91119811) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69661 + ... + 70956.

Almost surely, 2^91119816 is an apocalyptic number.

It is an amenable number.

91119816 is an abundant number, since it is smaller than the sum of its proper divisors (164101854).

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

91119816 is a wasteful number, since it uses less digits than its factorization.

91119816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140635 (or 140622 counting only the distinct ones).

The product of its digits is 3888, while the sum is 36.

The square root of 91119816 is about 9545.6700131526. The cubic root of 91119816 is about 449.9914665048.

The spelling of 91119816 in words is "ninety-one million, one hundred nineteen thousand, eight hundred sixteen".