1090203109 has 8 divisors (see below), whose sum is σ = 1147988480. Its totient is φ = 1032458400.

The previous prime is 1090203077. The next prime is 1090203167. The reversal of 1090203109 is 9013020901.

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

It is a cyclic number.

It is not a de Polignac number, because 1090203109 - 2⁵ = 1090203077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090203199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55969 + ... + 72889.

It is an arithmetic number, because the mean of its divisors is an integer number (143498560).

Almost surely, 2^1090203109 is an apocalyptic number.

1090203109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1090203109 is a deficient number, since it is larger than the sum of its proper divisors (57785371).

1090203109 is a wasteful number, since it uses less digits than its factorization.

1090203109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20331.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1090203109 is about 33018.2238922689. The cubic root of 1090203109 is about 1029.2063855670.

The spelling of 1090203109 in words is "one billion, ninety million, two hundred three thousand, one hundred nine".