2113423809 has 8 divisors (see below), whose sum is σ = 3220455360. Its totient is φ = 1207670736.

The previous prime is 2113423783. The next prime is 2113423841. The reversal of 2113423809 is 9083243112.

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

It is not a de Polignac number, because 2113423809 - 2¹⁹ = 2112899521 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2113423809.

It is not an unprimeable number, because it can be changed into a prime (2113423859) 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, 50319594 + ... + 50319635.

It is an arithmetic number, because the mean of its divisors is an integer number (402556920).

Almost surely, 2^2113423809 is an apocalyptic number.

It is an amenable number.

2113423809 is a deficient number, since it is larger than the sum of its proper divisors (1107031551).

2113423809 is a wasteful number, since it uses less digits than its factorization.

2113423809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100639239.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2113423809 is about 45971.9893957179. The cubic root of 2113423809 is about 1283.3019826527.

The spelling of 2113423809 in words is "two billion, one hundred thirteen million, four hundred twenty-three thousand, eight hundred nine".