1940597128735 has 4 divisors (see below), whose sum is σ = 2328716554488. Its totient is φ = 1552477702984.

The previous prime is 1940597128733. The next prime is 1940597128783. The reversal of 1940597128735 is 5378217950491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1940597128735 - 2¹ = 1940597128733 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 (1940597128733) 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 3 ways as a sum of consecutive naturals, for example, 194059712869 + ... + 194059712878.

It is an arithmetic number, because the mean of its divisors is an integer number (582179138622).

Almost surely, 2^{1940597128735} is an apocalyptic number.

1940597128735 is a deficient number, since it is larger than the sum of its proper divisors (388119425753).

1940597128735 is an equidigital number, since it uses as much as digits as its factorization.

1940597128735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388119425752.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 1940597128735 in words is "one trillion, nine hundred forty billion, five hundred ninety-seven million, one hundred twenty-eight thousand, seven hundred thirty-five".