1084687812 has 144 divisors (see below), whose sum is σ = 3076710000. Its totient is φ = 319915008.

The previous prime is 1084687753. The next prime is 1084687817. The reversal of 1084687812 is 2187864801.

1084687812 is a `hidden beast` number, since 108 + 468 + 7 + 81 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 42302016 + 1042385796 = 6504^2 + 32286^2 .

It is not an unprimeable number, because it can be changed into a prime (1084687817) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3107814 + ... + 3108162.

Almost surely, 2^1084687812 is an apocalyptic number.

1084687812 is a gapful number since it is divisible by the number (12) 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 1084687812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538355000).

1084687812 is an abundant number, since it is smaller than the sum of its proper divisors (1992022188).

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

1084687812 is a wasteful number, since it uses less digits than its factorization.

1084687812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1084687812 is about 32934.5990107668. The cubic root of 1084687812 is about 1027.4678783003.

The spelling of 1084687812 in words is "one billion, eighty-four million, six hundred eighty-seven thousand, eight hundred twelve".