1802953506121 has 2 divisors, whose sum is σ = 1802953506122. Its totient is φ = 1802953506120.

The previous prime is 1802953506073. The next prime is 1802953506139. The reversal of 1802953506121 is 1216053592081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018070910025 + 784882596096 = 1008995^2 + 885936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1802953506121 - 2¹¹ = 1802953504073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1802953506161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901476753060 + 901476753061.

It is an arithmetic number, because the mean of its divisors is an integer number (901476753061).

Almost surely, 2^{1802953506121} is an apocalyptic number.

It is an amenable number.

1802953506121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802953506121 is an equidigital number, since it uses as much as digits as its factorization.

1802953506121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 1802953506121 in words is "one trillion, eight hundred two billion, nine hundred fifty-three million, five hundred six thousand, one hundred twenty-one".