8438738706 has 32 divisors (see below), whose sum is σ = 18934830720. Its totient is φ = 2785601232.

The previous prime is 8438738701. The next prime is 8438738713. The reversal of 8438738706 is 6078378348.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8438738701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753045 + ... + 764168.

It is an arithmetic number, because the mean of its divisors is an integer number (591713460).

Almost surely, 2^8438738706 is an apocalyptic number.

8438738706 is an abundant number, since it is smaller than the sum of its proper divisors (10496092014).

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

8438738706 is a wasteful number, since it uses less digits than its factorization.

8438738706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517327 (or 1517321 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The square root of 8438738706 is about 91862.6077683407. The cubic root of 8438738706 is about 2035.9128332124.

The spelling of 8438738706 in words is "eight billion, four hundred thirty-eight million, seven hundred thirty-eight thousand, seven hundred six".