1943982971 has 16 divisors (see below), whose sum is σ = 2241523200. Its totient is φ = 1651442688.

The previous prime is 1943982961. The next prime is 1943982983. The reversal of 1943982971 is 1792893491.

It is not a de Polignac number, because 1943982971 - 2¹⁴ = 1943966587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1943982961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721595 + ... + 724283.

It is an arithmetic number, because the mean of its divisors is an integer number (140095200).

Almost surely, 2^1943982971 is an apocalyptic number.

1943982971 is a deficient number, since it is larger than the sum of its proper divisors (297540229).

1943982971 is a wasteful number, since it uses less digits than its factorization.

1943982971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578.

The product of its digits is 979776, while the sum is 53.

The square root of 1943982971 is about 44090.6222568927. The cubic root of 1943982971 is about 1248.0466496078.

The spelling of 1943982971 in words is "one billion, nine hundred forty-three million, nine hundred eighty-two thousand, nine hundred seventy-one".