1940069943 has 12 divisors (see below), whose sum is σ = 3202655248. Its totient is φ = 1108611360.

The previous prime is 1940069933. The next prime is 1940069947. The reversal of 1940069943 is 3499600491.

It is not a de Polignac number, because 1940069943 - 2⁸ = 1940069687 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 (1940069947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15397318 + ... + 15397443.

Almost surely, 2^1940069943 is an apocalyptic number.

1940069943 is a deficient number, since it is larger than the sum of its proper divisors (1262585305).

1940069943 is a wasteful number, since it uses less digits than its factorization.

1940069943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30794774 (or 30794771 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1940069943 is about 44046.2250709411. The cubic root of 1940069943 is about 1247.2086926958.

The spelling of 1940069943 in words is "one billion, nine hundred forty million, sixty-nine thousand, nine hundred forty-three".