1031873955857 has 2 divisors, whose sum is σ = 1031873955858. Its totient is φ = 1031873955856.

The previous prime is 1031873955793. The next prime is 1031873955869. The reversal of 1031873955857 is 7585593781301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675603446401 + 356270509456 = 821951^2 + 596884^2 .

It is an emirp because it is prime and its reverse (7585593781301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1031873955857 - 2⁶ = 1031873955793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031873955857.

It is not a weakly prime, because it can be changed into another prime (1031873955757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515936977928 + 515936977929.

It is an arithmetic number, because the mean of its divisors is an integer number (515936977929).

Almost surely, 2^{1031873955857} is an apocalyptic number.

It is an amenable number.

1031873955857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031873955857 is an equidigital number, since it uses as much as digits as its factorization.

1031873955857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752000, while the sum is 62.

The spelling of 1031873955857 in words is "one trillion, thirty-one billion, eight hundred seventy-three million, nine hundred fifty-five thousand, eight hundred fifty-seven".