1090913218 has 8 divisors (see below), whose sum is σ = 1636716348. Its totient is φ = 545341104.

The previous prime is 1090913191. The next prime is 1090913231. The reversal of 1090913218 is 8123190901.

It can be written as a sum of positive squares in 2 ways, for example, as 1088802009 + 2111209 = 32997^2 + 1453^2 .

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

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, 45421 + ... + 65152.

Almost surely, 2^1090913218 is an apocalyptic number.

1090913218 is a deficient number, since it is larger than the sum of its proper divisors (545803130).

1090913218 is a wasteful number, since it uses less digits than its factorization.

1090913218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115508.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1090913218 is about 33028.9754306730. The cubic root of 1090913218 is about 1029.4297965651.

The spelling of 1090913218 in words is "one billion, ninety million, nine hundred thirteen thousand, two hundred eighteen".