6538420029 has 4 divisors (see below), whose sum is σ = 8717893376. Its totient is φ = 4358946684.

The previous prime is 6538419991. The next prime is 6538420037. The reversal of 6538420029 is 9200248356.

It is a happy number.

6538420029 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6538420029 - 2²³ = 6530031421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538420039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089736669 + ... + 1089736674.

It is an arithmetic number, because the mean of its divisors is an integer number (2179473344).

Almost surely, 2^6538420029 is an apocalyptic number.

It is an amenable number.

6538420029 is a deficient number, since it is larger than the sum of its proper divisors (2179473347).

6538420029 is a wasteful number, since it uses less digits than its factorization.

6538420029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179473346.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 6538420029 is about 80860.4973333704. The cubic root of 6538420029 is about 1869.9253622493.

The spelling of 6538420029 in words is "six billion, five hundred thirty-eight million, four hundred twenty thousand, twenty-nine".