1118836081 has 32 divisors (see below), whose sum is σ = 1336393728. Its totient is φ = 926101440.

The previous prime is 1118836073. The next prime is 1118836093. The reversal of 1118836081 is 1806388111.

It is the 13656-th star number.

It is not a de Polignac number, because 1118836081 - 2³ = 1118836073 is a prime.

It is a super-3 number, since 3×1118836081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 1118836081.

It is not an unprimeable number, because it can be changed into a prime (1118836021) 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, 438696 + ... + 441238.

It is an arithmetic number, because the mean of its divisors is an integer number (41762304).

Almost surely, 2^1118836081 is an apocalyptic number.

1118836081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1118836081 is a deficient number, since it is larger than the sum of its proper divisors (217557647).

1118836081 is a wasteful number, since it uses less digits than its factorization.

1118836081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1118836081 is about 33449.0071751016. The cubic root of 1118836081 is about 1038.1389550549.

The spelling of 1118836081 in words is "one billion, one hundred eighteen million, eight hundred thirty-six thousand, eighty-one".