1089840652 has 24 divisors (see below), whose sum is σ = 1943569152. Its totient is φ = 534614400.

The previous prime is 1089840599. The next prime is 1089840659. The reversal of 1089840652 is 2560489801.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1089840599 and 1089840608.

It is not an unprimeable number, because it can be changed into a prime (1089840659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46002 + ... + 65542.

It is an arithmetic number, because the mean of its divisors is an integer number (80982048).

Almost surely, 2^1089840652 is an apocalyptic number.

It is an amenable number.

1089840652 is a deficient number, since it is larger than the sum of its proper divisors (853728500).

1089840652 is a wasteful number, since it uses less digits than its factorization.

1089840652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19809 (or 19807 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1089840652 is about 33012.7346943570. The cubic root of 1089840652 is about 1029.0923137318.

The spelling of 1089840652 in words is "one billion, eighty-nine million, eight hundred forty thousand, six hundred fifty-two".