11183020909 has 4 divisors (see below), whose sum is σ = 11184726780. Its totient is φ = 11181315040.

The previous prime is 11183020907. The next prime is 11183020939. The reversal of 11183020909 is 90902038111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2606408809 + 8576612100 = 51053^2 + 92610^2 .

It is a cyclic number.

It is not a de Polignac number, because 11183020909 - 2¹ = 11183020907 is a prime.

It is a super-2 number, since 2×11183020909² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11183020907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843064 + ... + 856225.

It is an arithmetic number, because the mean of its divisors is an integer number (2796181695).

Almost surely, 2^11183020909 is an apocalyptic number.

It is an amenable number.

11183020909 is a deficient number, since it is larger than the sum of its proper divisors (1705871).

11183020909 is an equidigital number, since it uses as much as digits as its factorization.

11183020909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705870.

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

The spelling of 11183020909 in words is "eleven billion, one hundred eighty-three million, twenty thousand, nine hundred nine".