2187000001 has 2 divisors, whose sum is σ = 2187000002. Its totient is φ = 2187000000.

The previous prime is 2186999989. The next prime is 2187000029. The reversal of 2187000001 is 1000007812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1984791601 + 202208400 = 44551^2 + 14220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187000001 - 2⁹ = 2186999489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2187000041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093500000 + 1093500001.

It is an arithmetic number, because the mean of its divisors is an integer number (1093500001).

Almost surely, 2^2187000001 is an apocalyptic number.

It is an amenable number.

2187000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187000001 is an equidigital number, since it uses as much as digits as its factorization.

2187000001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2187000001 is about 46765.3718150514. The cubic root of 2187000001 is about 1298.0246134745.

Adding to 2187000001 its reverse (1000007812), we get a palindrome (3187007813).

The spelling of 2187000001 in words is "two billion, one hundred eighty-seven million, one", and thus it is an aban number.