6428742637 has 8 divisors (see below), whose sum is σ = 6607374336. Its totient is φ = 6250367952.

The previous prime is 6428742623. The next prime is 6428742647. The reversal of 6428742637 is 7362478246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6428742637 - 2¹¹ = 6428740589 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 (6428742647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12973 + ... + 114130.

It is an arithmetic number, because the mean of its divisors is an integer number (825921792).

Almost surely, 2^6428742637 is an apocalyptic number.

It is an amenable number.

6428742637 is a deficient number, since it is larger than the sum of its proper divisors (178631699).

6428742637 is a wasteful number, since it uses less digits than its factorization.

6428742637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128507.

The product of its digits is 2709504, while the sum is 49.

The square root of 6428742637 is about 80179.4402387545. The cubic root of 6428742637 is about 1859.4107893013.

The spelling of 6428742637 in words is "six billion, four hundred twenty-eight million, seven hundred forty-two thousand, six hundred thirty-seven".