1940322009 has 48 divisors (see below), whose sum is σ = 2848573440. Its totient is φ = 1170792000.

The previous prime is 1940322001. The next prime is 1940322011. The reversal of 1940322009 is 9002230491.

It is not a de Polignac number, because 1940322009 - 2³ = 1940322001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940322001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19211059 + ... + 19211159.

It is an arithmetic number, because the mean of its divisors is an integer number (59345280).

Almost surely, 2^1940322009 is an apocalyptic number.

1940322009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1940322009 is a deficient number, since it is larger than the sum of its proper divisors (908251431).

1940322009 is a wasteful number, since it uses less digits than its factorization.

1940322009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1940322009 is about 44049.0863582890. The cubic root of 1940322009 is about 1247.2627054034.

The spelling of 1940322009 in words is "one billion, nine hundred forty million, three hundred twenty-two thousand, nine".