1089708642 has 48 divisors (see below), whose sum is σ = 2619358560. Its totient is φ = 324614400.

The previous prime is 1089708617. The next prime is 1089708649. The reversal of 1089708642 is 2468079801.

It is not an unprimeable number, because it can be changed into a prime (1089708649) 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 23 ways as a sum of consecutive naturals, for example, 34959 + ... + 58322.

It is an arithmetic number, because the mean of its divisors is an integer number (54569970).

Almost surely, 2^1089708642 is an apocalyptic number.

1089708642 is an abundant number, since it is smaller than the sum of its proper divisors (1529649918).

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

1089708642 is a wasteful number, since it uses less digits than its factorization.

1089708642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93359 (or 93356 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1089708642 is about 33010.7352538534. The cubic root of 1089708642 is about 1029.0507614916.

The spelling of 1089708642 in words is "one billion, eighty-nine million, seven hundred eight thousand, six hundred forty-two".