91153916 has 18 divisors (see below), whose sum is σ = 185563728. Its totient is φ = 39065880.

The previous prime is 91153901. The next prime is 91153927. The reversal of 91153916 is 61935119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232340 + ... + 232731.

It is an arithmetic number, because the mean of its divisors is an integer number (10309096).

Almost surely, 2^91153916 is an apocalyptic number.

It is an amenable number.

91153916 is an abundant number, since it is smaller than the sum of its proper divisors (94409812).

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

91153916 is a wasteful number, since it uses less digits than its factorization.

91153916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465089 (or 465080 counting only the distinct ones).

The product of its digits is 7290, while the sum is 35.

The square root of 91153916 is about 9547.4559962327. The cubic root of 91153916 is about 450.0475933201.

It can be divided in two parts, 9115 and 3916, that added together give a palindrome (13031).

The spelling of 91153916 in words is "ninety-one million, one hundred fifty-three thousand, nine hundred sixteen".