11254163891 has 4 divisors (see below), whose sum is σ = 11256756000. Its totient is φ = 11251571784.

The previous prime is 11254163887. The next prime is 11254163927. The reversal of 11254163891 is 19836145211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19836145211 = 2633 ⋅7533667.

It is a cyclic number.

It is not a de Polignac number, because 11254163891 - 2² = 11254163887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11254162891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289531 + ... + 1298228.

It is an arithmetic number, because the mean of its divisors is an integer number (2814189000).

Almost surely, 2^11254163891 is an apocalyptic number.

11254163891 is a deficient number, since it is larger than the sum of its proper divisors (2592109).

11254163891 is an equidigital number, since it uses as much as digits as its factorization.

11254163891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592108.

The product of its digits is 51840, while the sum is 41.

The spelling of 11254163891 in words is "eleven billion, two hundred fifty-four million, one hundred sixty-three thousand, eight hundred ninety-one".