7638865910 has 48 divisors (see below), whose sum is σ = 15133294800. Its totient is φ = 2774229120.

The previous prime is 7638865909. The next prime is 7638865919. The reversal of 7638865910 is 195688367.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638865919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66041 + ... + 140139.

It is an arithmetic number, because the mean of its divisors is an integer number (315276975).

Almost surely, 2^7638865910 is an apocalyptic number.

7638865910 is a deficient number, since it is larger than the sum of its proper divisors (7494428890).

7638865910 is a wasteful number, since it uses less digits than its factorization.

7638865910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74193 (or 74180 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 7638865910 is about 87400.6058903484. The cubic root of 7638865910 is about 1969.4409426536.

The spelling of 7638865910 in words is "seven billion, six hundred thirty-eight million, eight hundred sixty-five thousand, nine hundred ten".