1983143379 has 8 divisors (see below), whose sum is σ = 3021932800. Its totient is φ = 1133224776.

The previous prime is 1983143321. The next prime is 1983143389. The reversal of 1983143379 is 9733413891.

It is a happy number.

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

It is not a de Polignac number, because 1983143379 - 2¹⁷ = 1983012307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1983143389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47217679 + ... + 47217720.

It is an arithmetic number, because the mean of its divisors is an integer number (377741600).

Almost surely, 2^1983143379 is an apocalyptic number.

1983143379 is a deficient number, since it is larger than the sum of its proper divisors (1038789421).

1983143379 is an equidigital number, since it uses as much as digits as its factorization.

1983143379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94435409.

The product of its digits is 489888, while the sum is 48.

The square root of 1983143379 is about 44532.4980098804. The cubic root of 1983143379 is about 1256.3713899876.

The spelling of 1983143379 in words is "one billion, nine hundred eighty-three million, one hundred forty-three thousand, three hundred seventy-nine".