1871945273013 has 16 divisors (see below), whose sum is σ = 2513292605952. Its totient is φ = 1239286230000.

The previous prime is 1871945272987. The next prime is 1871945273111. The reversal of 1871945273013 is 3103725491781.

It is a de Polignac number, because none of the positive numbers 2^k-1871945273013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871945273713) 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, 677778 + ... + 2050188.

It is an arithmetic number, because the mean of its divisors is an integer number (157080787872).

Almost surely, 2^{1871945273013} is an apocalyptic number.

It is an amenable number.

1871945273013 is a deficient number, since it is larger than the sum of its proper divisors (641347332939).

1871945273013 is a wasteful number, since it uses less digits than its factorization.

1871945273013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375576.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 1871945273013 in words is "one trillion, eight hundred seventy-one billion, nine hundred forty-five million, two hundred seventy-three thousand, thirteen".