9145412191 has 32 divisors (see below), whose sum is σ = 10346434560. Its totient is φ = 8037579264.

The previous prime is 9145412179. The next prime is 9145412203. The reversal of 9145412191 is 1912145419.

It is an interprime number because it is at equal distance from previous prime (9145412179) and next prime (9145412203).

It is not a de Polignac number, because 9145412191 - 2¹⁵ = 9145379423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9145412191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9145410191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4620240 + ... + 4622218.

It is an arithmetic number, because the mean of its divisors is an integer number (323326080).

Almost surely, 2^9145412191 is an apocalyptic number.

9145412191 is a deficient number, since it is larger than the sum of its proper divisors (1201022369).

9145412191 is a wasteful number, since it uses less digits than its factorization.

9145412191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295.

The product of its digits is 12960, while the sum is 37.

The square root of 9145412191 is about 95631.6484799880. The cubic root of 9145412191 is about 2091.2266016206.

The spelling of 9145412191 in words is "nine billion, one hundred forty-five million, four hundred twelve thousand, one hundred ninety-one".