8738086640 has 20 divisors (see below), whose sum is σ = 20316051624. Its totient is φ = 3495234624.

The previous prime is 8738086633. The next prime is 8738086691. The reversal of 8738086640 is 466808378.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54612962 + ... + 54613121.

Almost surely, 2^8738086640 is an apocalyptic number.

8738086640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8738086640 is an abundant number, since it is smaller than the sum of its proper divisors (11577964984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8738086640 is a wasteful number, since it uses less digits than its factorization.

8738086640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109226096 (or 109226090 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 8738086640 is about 93477.7333914339. The cubic root of 8738086640 is about 2059.7070183763.

The spelling of 8738086640 in words is "eight billion, seven hundred thirty-eight million, eighty-six thousand, six hundred forty".