1964786944133 has 16 divisors (see below), whose sum is σ = 2167113527040. Its totient is φ = 1769850298944.

The previous prime is 1964786944073. The next prime is 1964786944187. The reversal of 1964786944133 is 3314496874691.

It is not a de Polignac number, because 1964786944133 - 2¹⁴ = 1964786927749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1964786944133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964786944633) 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, 996893 + ... + 2218866.

It is an arithmetic number, because the mean of its divisors is an integer number (135444595440).

Almost surely, 2^{1964786944133} is an apocalyptic number.

1964786944133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1964786944133 is a deficient number, since it is larger than the sum of its proper divisors (202326582907).

1964786944133 is a wasteful number, since it uses less digits than its factorization.

1964786944133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216908.

The product of its digits is 94058496, while the sum is 65.

The spelling of 1964786944133 in words is "one trillion, nine hundred sixty-four billion, seven hundred eighty-six million, nine hundred forty-four thousand, one hundred thirty-three".