1089981366 has 8 divisors (see below), whose sum is σ = 2179962744. Its totient is φ = 363327120.

The previous prime is 1089981353. The next prime is 1089981377. The reversal of 1089981366 is 6631899801.

It is a sphenic number, since it is the product of 3 distinct primes.

1089981366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90831775 + ... + 90831786.

It is an arithmetic number, because the mean of its divisors is an integer number (272495343).

Almost surely, 2^1089981366 is an apocalyptic number.

1089981366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1089981366 is a wasteful number, since it uses less digits than its factorization.

1089981366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181663566.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1089981366 is about 33014.8658334393. The cubic root of 1089981366 is about 1029.1366019996.

The spelling of 1089981366 in words is "one billion, eighty-nine million, nine hundred eighty-one thousand, three hundred sixty-six".