6238423657 has 4 divisors (see below), whose sum is σ = 6293631060. Its totient is φ = 6183216256.

The previous prime is 6238423637. The next prime is 6238423661. The reversal of 6238423657 is 7563248326.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7563248326 = 2 ⋅3781624163.

It can be written as a sum of positive squares in 2 ways, for example, as 922701376 + 5315722281 = 30376^2 + 72909^2 .

It is a cyclic number.

It is not a de Polignac number, because 6238423657 - 2¹⁵ = 6238390889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6238423637) 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, 27603532 + ... + 27603757.

It is an arithmetic number, because the mean of its divisors is an integer number (1573407765).

Almost surely, 2^6238423657 is an apocalyptic number.

It is an amenable number.

6238423657 is a deficient number, since it is larger than the sum of its proper divisors (55207403).

6238423657 is a wasteful number, since it uses less digits than its factorization.

6238423657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55207402.

The product of its digits is 1451520, while the sum is 46.

The square root of 6238423657 is about 78983.6923484842. The cubic root of 6238423657 is about 1840.8777767808.

The spelling of 6238423657 in words is "six billion, two hundred thirty-eight million, four hundred twenty-three thousand, six hundred fifty-seven".