1857113543857 has 24 divisors (see below), whose sum is σ = 2223012715560. Its totient is φ = 1540906540800.

The previous prime is 1857113543851. The next prime is 1857113543861. The reversal of 1857113543857 is 7583453117581.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48346774641 + 1808766769216 = 219879^2 + 1344904^2 .

It is not a de Polignac number, because 1857113543857 - 2¹¹ = 1857113541809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1857113543851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6492694 + ... + 6772687.

It is an arithmetic number, because the mean of its divisors is an integer number (92625529815).

Almost surely, 2^{1857113543857} is an apocalyptic number.

It is an amenable number.

1857113543857 is a deficient number, since it is larger than the sum of its proper divisors (365899171703).

1857113543857 is a wasteful number, since it uses less digits than its factorization.

1857113543857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265505 (or 13265494 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 58.

The spelling of 1857113543857 in words is "one trillion, eight hundred fifty-seven billion, one hundred thirteen million, five hundred forty-three thousand, eight hundred fifty-seven".