8638947702 has 192 divisors, whose sum is σ = 25387891200. Its totient is φ = 2125569600.

The previous prime is 8638947671. The next prime is 8638947727. The reversal of 8638947702 is 2077498368.

8638947702 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 864052 + ... + 873992.

It is an arithmetic number, because the mean of its divisors is an integer number (132228600).

Almost surely, 2^8638947702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8638947702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12693945600).

8638947702 is an abundant number, since it is smaller than the sum of its proper divisors (16748943498).

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

8638947702 is a wasteful number, since it uses less digits than its factorization.

8638947702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000 (or 9983 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 8638947702 is about 92945.9396746302. The cubic root of 8638947702 is about 2051.8878268766.

It can be divided in two parts, 863 and 8947702, that added together give a triangular number (8948565 = T₄₂₃₀).

The spelling of 8638947702 in words is "eight billion, six hundred thirty-eight million, nine hundred forty-seven thousand, seven hundred two".