1873455532121 has 2 divisors, whose sum is σ = 1873455532122. Its totient is φ = 1873455532120.

The previous prime is 1873455531971. The next prime is 1873455532127. The reversal of 1873455532121 is 1212355543781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1873284942400 + 170589721 = 1368680^2 + 13061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1873455532121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1873455532127) 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 as a sum of consecutive naturals, namely, 936727766060 + 936727766061.

It is an arithmetic number, because the mean of its divisors is an integer number (936727766061).

Almost surely, 2^{1873455532121} is an apocalyptic number.

It is an amenable number.

1873455532121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1873455532121 is an equidigital number, since it uses as much as digits as its factorization.

1873455532121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 47.

The spelling of 1873455532121 in words is "one trillion, eight hundred seventy-three billion, four hundred fifty-five million, five hundred thirty-two thousand, one hundred twenty-one".