1887242380201 has 2 divisors, whose sum is σ = 1887242380202. Its totient is φ = 1887242380200.

The previous prime is 1887242380183. The next prime is 1887242380211. The reversal of 1887242380201 is 1020832427881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091178714025 + 796063666176 = 1044595^2 + 892224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1887242380201 - 2¹⁹ = 1887241855913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1887242380211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 943621190100 + 943621190101.

It is an arithmetic number, because the mean of its divisors is an integer number (943621190101).

Almost surely, 2^{1887242380201} is an apocalyptic number.

It is an amenable number.

1887242380201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1887242380201 is an equidigital number, since it uses as much as digits as its factorization.

1887242380201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 1887242380201 in words is "one trillion, eight hundred eighty-seven billion, two hundred forty-two million, three hundred eighty thousand, two hundred one".