1909143189383 has 4 divisors (see below), whose sum is σ = 1945164759048. Its totient is φ = 1873121619720.

The previous prime is 1909143189307. The next prime is 1909143189403. The reversal of 1909143189383 is 3839813419091.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1909143189383 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 (1909143189683) 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, 18010784753 + ... + 18010784858.

It is an arithmetic number, because the mean of its divisors is an integer number (486291189762).

Almost surely, 2^{1909143189383} is an apocalyptic number.

1909143189383 is a deficient number, since it is larger than the sum of its proper divisors (36021569665).

1909143189383 is an equidigital number, since it uses as much as digits as its factorization.

1909143189383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36021569664.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 1909143189383 in words is "one trillion, nine hundred nine billion, one hundred forty-three million, one hundred eighty-nine thousand, three hundred eighty-three".