1803855827953 has 2 divisors, whose sum is σ = 1803855827954. Its totient is φ = 1803855827952.

The previous prime is 1803855827927. The next prime is 1803855828013. The reversal of 1803855827953 is 3597285583081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597564546704 + 206291281249 = 1263948^2 + 454193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1803855827953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1803855827153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901927913976 + 901927913977.

It is an arithmetic number, because the mean of its divisors is an integer number (901927913977).

Almost surely, 2^{1803855827953} is an apocalyptic number.

It is an amenable number.

1803855827953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1803855827953 is an equidigital number, since it uses as much as digits as its factorization.

1803855827953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576000, while the sum is 64.

The spelling of 1803855827953 in words is "one trillion, eight hundred three billion, eight hundred fifty-five million, eight hundred twenty-seven thousand, nine hundred fifty-three".