1118844541 has 4 divisors (see below), whose sum is σ = 1142649792.
Its totient is φ = 1095039292.
The previous prime is 1118844539. The next prime is 1118844589. The reversal of 1118844541 is 1454488111.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 1118844541 - 21 = 1118844539 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 1118844541.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1118844521) 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, 11902555 + ... + 11902648.
It is an arithmetic number, because the mean of its divisors is an integer number (285662448).
Almost surely, 21118844541 is an apocalyptic number.
It is an amenable number.
1118844541 is a deficient number, since it is larger than the sum of its proper divisors (23805251).
1118844541 is an equidigital number, since it uses as much as digits as its factorization.
1118844541 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23805250.
The product of its digits is 20480, while the sum is 37.
The square root of 1118844541 is about 33449.1336360151.
The cubic root of 1118844541 is about 1038.1415716531.
The spelling of 1118844541 in words is "one billion, one hundred eighteen million, eight hundred forty-four thousand, five hundred forty-one".