1983243505 has 8 divisors (see below), whose sum is σ = 2384122752. Its totient is φ = 1583774448.

The previous prime is 1983243499. The next prime is 1983243539. The reversal of 1983243505 is 5053423891.

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 1983243505 - 2⁹ = 1983242993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349449 + ... + 355078.

It is an arithmetic number, because the mean of its divisors is an integer number (298015344).

Almost surely, 2^1983243505 is an apocalyptic number.

It is an amenable number.

1983243505 is a deficient number, since it is larger than the sum of its proper divisors (400879247).

1983243505 is an equidigital number, since it uses as much as digits as its factorization.

1983243505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705095.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1983243505 is about 44533.6221859395. The cubic root of 1983243505 is about 1256.3925337479.

The spelling of 1983243505 in words is "one billion, nine hundred eighty-three million, two hundred forty-three thousand, five hundred five".