1983981043 has 8 divisors (see below), whose sum is σ = 2166418800. Its totient is φ = 1801889280.

The previous prime is 1983981017. The next prime is 1983981067. The reversal of 1983981043 is 3401893891.

It is a happy number.

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 1983981043 - 2⁵ = 1983981011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1983980984 and 1983981002.

It is not an unprimeable number, because it can be changed into a prime (1983981743) 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, 74430 + ... + 97507.

It is an arithmetic number, because the mean of its divisors is an integer number (270802350).

Almost surely, 2^1983981043 is an apocalyptic number.

1983981043 is a deficient number, since it is larger than the sum of its proper divisors (182437757).

1983981043 is a wasteful number, since it uses less digits than its factorization.

1983981043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172997.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1983981043 is about 44541.9021035249. The cubic root of 1983981043 is about 1256.5482588502.

The spelling of 1983981043 in words is "one billion, nine hundred eighty-three million, nine hundred eighty-one thousand, forty-three".