7638005311 has 4 divisors (see below), whose sum is σ = 7638353872. Its totient is φ = 7637656752.

The previous prime is 7638005281. The next prime is 7638005317. The reversal of 7638005311 is 1135008367.

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

It is a cyclic number.

It is not a de Polignac number, because 7638005311 - 2⁵ = 7638005279 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 (7638005317) 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, 139035 + ... + 186028.

It is an arithmetic number, because the mean of its divisors is an integer number (1909588468).

Almost surely, 2^7638005311 is an apocalyptic number.

7638005311 is a deficient number, since it is larger than the sum of its proper divisors (348561).

7638005311 is a wasteful number, since it uses less digits than its factorization.

7638005311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348560.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 7638005311 is about 87395.6824505650. The cubic root of 7638005311 is about 1969.3669804285.

The spelling of 7638005311 in words is "seven billion, six hundred thirty-eight million, five thousand, three hundred eleven".