1118836520 has 32 divisors (see below), whose sum is σ = 2518342920. Its totient is φ = 447363840.

The previous prime is 1118836513. The next prime is 1118836561. The reversal of 1118836520 is 256388111.

It can be written as a sum of positive squares in 4 ways, for example, as 561026596 + 557809924 = 23686^2 + 23618^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181814 + ... + 187866.

Almost surely, 2^1118836520 is an apocalyptic number.

1118836520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118836520 is an abundant number, since it is smaller than the sum of its proper divisors (1399506400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1118836520 is a wasteful number, since it uses less digits than its factorization.

1118836520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10685 (or 10681 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1118836520 is about 33449.0137373286. The cubic root of 1118836520 is about 1038.1390908338.

The spelling of 1118836520 in words is "one billion, one hundred eighteen million, eight hundred thirty-six thousand, five hundred twenty".