2152188461 has 2 divisors, whose sum is σ = 2152188462. Its totient is φ = 2152188460.

The previous prime is 2152188449. The next prime is 2152188473. The reversal of 2152188461 is 1648812512.

It is a balanced prime because it is at equal distance from previous prime (2152188449) and next prime (2152188473).

It can be written as a sum of positive squares in only one way, i.e., 1495291561 + 656896900 = 38669^2 + 25630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152188461 - 2³⁰ = 1078446637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152187461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076094230 + 1076094231.

It is an arithmetic number, because the mean of its divisors is an integer number (1076094231).

Almost surely, 2^2152188461 is an apocalyptic number.

It is an amenable number.

2152188461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152188461 is an equidigital number, since it uses as much as digits as its factorization.

2152188461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 38.

The square root of 2152188461 is about 46391.6852571665. The cubic root of 2152188461 is about 1291.1006492873.

The spelling of 2152188461 in words is "two billion, one hundred fifty-two million, one hundred eighty-eight thousand, four hundred sixty-one".