2061330181 has 2 divisors, whose sum is σ = 2061330182. Its totient is φ = 2061330180.

The previous prime is 2061330133. The next prime is 2061330191. The reversal of 2061330181 is 1810331602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852527681 + 208802500 = 43041^2 + 14450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061330181 - 2¹⁹ = 2060805893 is a prime.

It is a super-2 number, since 2×2061330181² = 8498164230202985522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061330191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030665090 + 1030665091.

It is an arithmetic number, because the mean of its divisors is an integer number (1030665091).

Almost surely, 2^2061330181 is an apocalyptic number.

It is an amenable number.

2061330181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061330181 is an equidigital number, since it uses as much as digits as its factorization.

2061330181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2061330181 is about 45401.8742014027. The cubic root of 2061330181 is about 1272.6701382687.

Adding to 2061330181 its reverse (1810331602), we get a palindrome (3871661783).

The spelling of 2061330181 in words is "two billion, sixty-one million, three hundred thirty thousand, one hundred eighty-one".