638114467 has 8 divisors (see below), whose sum is σ = 640543680. Its totient is φ = 635690880.

The previous prime is 638114459. The next prime is 638114501. The reversal of 638114467 is 764411836.

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 638114467 - 2³ = 638114459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638154467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447718 + ... + 449140.

It is an arithmetic number, because the mean of its divisors is an integer number (80067960).

Almost surely, 2^638114467 is an apocalyptic number.

638114467 is a deficient number, since it is larger than the sum of its proper divisors (2429213).

638114467 is a wasteful number, since it uses less digits than its factorization.

638114467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813.

The product of its digits is 96768, while the sum is 40.

The square root of 638114467 is about 25260.9276749687. The cubic root of 638114467 is about 860.9267398501.

The spelling of 638114467 in words is "six hundred thirty-eight million, one hundred fourteen thousand, four hundred sixty-seven".