9191791416 has 32 divisors (see below), whose sum is σ = 23147220240. Its totient is φ = 3041564928.

The previous prime is 9191791409. The next prime is 9191791417. The reversal of 9191791416 is 6141971919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9191791417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394491 + ... + 1401066.

Almost surely, 2^9191791416 is an apocalyptic number.

It is an amenable number.

9191791416 is an abundant number, since it is smaller than the sum of its proper divisors (13955428824).

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

9191791416 is a wasteful number, since it uses less digits than its factorization.

9191791416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795703 (or 2795699 counting only the distinct ones).

The product of its digits is 122472, while the sum is 48.

The square root of 9191791416 is about 95873.8307151644. The cubic root of 9191791416 is about 2094.7557290438.

The spelling of 9191791416 in words is "nine billion, one hundred ninety-one million, seven hundred ninety-one thousand, four hundred sixteen".