2029326581 has 2 divisors, whose sum is σ = 2029326582. Its totient is φ = 2029326580.

The previous prime is 2029326539. The next prime is 2029326587. The reversal of 2029326581 is 1856239202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2011971025 + 17355556 = 44855^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2029326581 - 2⁶ = 2029326517 is a prime.

It is a super-2 number, since 2×2029326581² = 8236332744706299122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2029326587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014663290 + 1014663291.

It is an arithmetic number, because the mean of its divisors is an integer number (1014663291).

Almost surely, 2^2029326581 is an apocalyptic number.

It is an amenable number.

2029326581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2029326581 is an equidigital number, since it uses as much as digits as its factorization.

2029326581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2029326581 is about 45048.0474715609. The cubic root of 2029326581 is about 1266.0493890389.

The spelling of 2029326581 in words is "two billion, twenty-nine million, three hundred twenty-six thousand, five hundred eighty-one".