1118785536 has 312 divisors, whose sum is σ = 3680052480. Its totient is φ = 324403200.

The previous prime is 1118785471. The next prime is 1118785537. The reversal of 1118785536 is 6355878111.

1118785536 is a `hidden beast` number, since 1 + 11 + 87 + 8 + 553 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1118785491 and 1118785500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118785537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12570580 + ... + 12570668.

It is an arithmetic number, because the mean of its divisors is an integer number (11795040).

Almost surely, 2^1118785536 is an apocalyptic number.

1118785536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118785536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840026240).

1118785536 is an abundant number, since it is smaller than the sum of its proper divisors (2561266944).

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

1118785536 is a wasteful number, since it uses less digits than its factorization.

1118785536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 136 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 1118785536 is about 33448.2516134999. The cubic root of 1118785536 is about 1038.1233216884.

The spelling of 1118785536 in words is "one billion, one hundred eighteen million, seven hundred eighty-five thousand, five hundred thirty-six".