2102832181 has 2 divisors, whose sum is σ = 2102832182. Its totient is φ = 2102832180.

The previous prime is 2102832161. The next prime is 2102832197. The reversal of 2102832181 is 1812382012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1433833956 + 668998225 = 37866^2 + 25865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102832181 - 2¹¹ = 2102830133 is a prime.

It is a super-2 number, since 2×2102832181² = 8843806362898433522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102832161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051416090 + 1051416091.

It is an arithmetic number, because the mean of its divisors is an integer number (1051416091).

Almost surely, 2^2102832181 is an apocalyptic number.

It is an amenable number.

2102832181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102832181 is an equidigital number, since it uses as much as digits as its factorization.

2102832181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 2102832181 is about 45856.6481657785. The cubic root of 2102832181 is about 1281.1545939953.

The spelling of 2102832181 in words is "two billion, one hundred two million, eight hundred thirty-two thousand, one hundred eighty-one".