1856957216793 has 48 divisors (see below), whose sum is σ = 2974088646144. Its totient is φ = 1026543006720.

The previous prime is 1856957216791. The next prime is 1856957216857. The reversal of 1856957216793 is 3976127596581.

It is not a de Polignac number, because 1856957216793 - 2¹ = 1856957216791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1856957216791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13772521 + ... + 13906697.

It is an arithmetic number, because the mean of its divisors is an integer number (61960180128).

Almost surely, 2^{1856957216793} is an apocalyptic number.

It is an amenable number.

1856957216793 is a deficient number, since it is larger than the sum of its proper divisors (1117131429351).

1856957216793 is a wasteful number, since it uses less digits than its factorization.

1856957216793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137262 (or 137255 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 69.

The spelling of 1856957216793 in words is "one trillion, eight hundred fifty-six billion, nine hundred fifty-seven million, two hundred sixteen thousand, seven hundred ninety-three".