7638466863 has 4 divisors (see below), whose sum is σ = 10184622488. Its totient is φ = 5092311240.

The previous prime is 7638466831. The next prime is 7638466897. The reversal of 7638466863 is 3686648367.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7638466863 - 2⁵ = 7638466831 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 (7638426863) 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 in 3 ways as a sum of consecutive naturals, for example, 1273077808 + ... + 1273077813.

It is an arithmetic number, because the mean of its divisors is an integer number (2546155622).

Almost surely, 2^7638466863 is an apocalyptic number.

7638466863 is a deficient number, since it is larger than the sum of its proper divisors (2546155625).

7638466863 is a wasteful number, since it uses less digits than its factorization.

7638466863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546155624.

The product of its digits is 20901888, while the sum is 57.

The square root of 7638466863 is about 87398.3229987853. The cubic root of 7638466863 is about 1969.4066481569.

The spelling of 7638466863 in words is "seven billion, six hundred thirty-eight million, four hundred sixty-six thousand, eight hundred sixty-three".