11145183891 has 32 divisors (see below), whose sum is σ = 15716929536. Its totient is φ = 7015680000.

The previous prime is 11145183887. The next prime is 11145183961. The reversal of 11145183891 is 19838154111.

It is not a de Polignac number, because 11145183891 - 2² = 11145183887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11145183821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631791 + ... + 649191.

It is an arithmetic number, because the mean of its divisors is an integer number (491154048).

Almost surely, 2^11145183891 is an apocalyptic number.

11145183891 is a deficient number, since it is larger than the sum of its proper divisors (4571745645).

11145183891 is a wasteful number, since it uses less digits than its factorization.

11145183891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17603.

The product of its digits is 34560, while the sum is 42.

The spelling of 11145183891 in words is "eleven billion, one hundred forty-five million, one hundred eighty-three thousand, eight hundred ninety-one".