1864201874201 has 2 divisors, whose sum is σ = 1864201874202. Its totient is φ = 1864201874200.

The previous prime is 1864201874191. The next prime is 1864201874207. The reversal of 1864201874201 is 1024781024681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1375846891225 + 488354982976 = 1172965^2 + 698824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1864201874201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1864201874207) 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, 932100937100 + 932100937101.

It is an arithmetic number, because the mean of its divisors is an integer number (932100937101).

Almost surely, 2^{1864201874201} is an apocalyptic number.

It is an amenable number.

1864201874201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864201874201 is an equidigital number, since it uses as much as digits as its factorization.

1864201874201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 44.

Adding to 1864201874201 its reverse (1024781024681), we get a palindrome (2888982898882).

The spelling of 1864201874201 in words is "one trillion, eight hundred sixty-four billion, two hundred one million, eight hundred seventy-four thousand, two hundred one".