1940185413009 has 12 divisors (see below), whose sum is σ = 2805058790352. Its totient is φ = 1292271365400.

The previous prime is 1940185413007. The next prime is 1940185413031. The reversal of 1940185413009 is 9003145810491.

1940185413009 is a `hidden beast` number, since 1 + 94 + 0 + 18 + 541 + 3 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 1940185413009 - 2¹ = 1940185413007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940185413007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98787687 + ... + 98807324.

It is an arithmetic number, because the mean of its divisors is an integer number (233754899196).

Almost surely, 2^{1940185413009} is an apocalyptic number.

It is an amenable number.

1940185413009 is a deficient number, since it is larger than the sum of its proper divisors (864873377343).

1940185413009 is a wasteful number, since it uses less digits than its factorization.

1940185413009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197596108 (or 197596105 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 1940185413009 in words is "one trillion, nine hundred forty billion, one hundred eighty-five million, four hundred thirteen thousand, nine".