2031638429 has 2 divisors, whose sum is σ = 2031638430. Its totient is φ = 2031638428.

The previous prime is 2031638419. The next prime is 2031638449. The reversal of 2031638429 is 9248361302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1544332804 + 487305625 = 39298^2 + 22075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031638429 - 2⁸ = 2031638173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031638392 and 2031638401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031638419) 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, 1015819214 + 1015819215.

It is an arithmetic number, because the mean of its divisors is an integer number (1015819215).

Almost surely, 2^2031638429 is an apocalyptic number.

It is an amenable number.

2031638429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031638429 is an equidigital number, since it uses as much as digits as its factorization.

2031638429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 2031638429 is about 45073.6999701600. The cubic root of 2031638429 is about 1266.5299758853.

The spelling of 2031638429 in words is "two billion, thirty-one million, six hundred thirty-eight thousand, four hundred twenty-nine".