1091089386 has 32 divisors (see below), whose sum is σ = 2432476800. Its totient is φ = 362521440.

The previous prime is 1091089369. The next prime is 1091089397. The reversal of 1091089386 is 6839801901.

It is a super-3 number, since 3×1091089386³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15691 + ... + 49278.

It is an arithmetic number, because the mean of its divisors is an integer number (76014900).

Almost surely, 2^1091089386 is an apocalyptic number.

1091089386 is an abundant number, since it is smaller than the sum of its proper divisors (1341387414).

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

1091089386 is a wasteful number, since it uses less digits than its factorization.

1091089386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65291 (or 65285 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1091089386 is about 33031.6421935089. The cubic root of 1091089386 is about 1029.4852066638.

The spelling of 1091089386 in words is "one billion, ninety-one million, eighty-nine thousand, three hundred eighty-six".