7648380638 has 8 divisors (see below), whose sum is σ = 11472998520. Its totient is φ = 3824047800.

The previous prime is 7648380637. The next prime is 7648380671. The reversal of 7648380638 is 8360838467.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7648380638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7648380637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18368 + ... + 125036.

It is an arithmetic number, because the mean of its divisors is an integer number (1434124815).

Almost surely, 2^7648380638 is an apocalyptic number.

7648380638 is a deficient number, since it is larger than the sum of its proper divisors (3824617882).

7648380638 is a wasteful number, since it uses less digits than its factorization.

7648380638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142522.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The square root of 7648380638 is about 87455.0206563351. The cubic root of 7648380638 is about 1970.2582943554.

The spelling of 7648380638 in words is "seven billion, six hundred forty-eight million, three hundred eighty thousand, six hundred thirty-eight".