1872983844857 has 2 divisors, whose sum is σ = 1872983844858. Its totient is φ = 1872983844856.

The previous prime is 1872983844817. The next prime is 1872983844911. The reversal of 1872983844857 is 7584483892781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230644110336 + 642339734521 = 1109344^2 + 801461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872983844857 - 2¹⁴ = 1872983828473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1872983844817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936491922428 + 936491922429.

It is an arithmetic number, because the mean of its divisors is an integer number (936491922429).

Almost surely, 2^{1872983844857} is an apocalyptic number.

It is an amenable number.

1872983844857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872983844857 is an equidigital number, since it uses as much as digits as its factorization.

1872983844857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 867041280, while the sum is 74.

The spelling of 1872983844857 in words is "one trillion, eight hundred seventy-two billion, nine hundred eighty-three million, eight hundred forty-four thousand, eight hundred fifty-seven".