8630434385 has 4 divisors (see below), whose sum is σ = 10356521268. Its totient is φ = 6904347504.

The previous prime is 8630434381. The next prime is 8630434433. The reversal of 8630434385 is 5834340368.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1041933841 + 7588500544 = 32279^2 + 87112^2 .

It is a cyclic number.

It is not a de Polignac number, because 8630434385 - 2² = 8630434381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8630434381) 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, 863043434 + ... + 863043443.

It is an arithmetic number, because the mean of its divisors is an integer number (2589130317).

Almost surely, 2^8630434385 is an apocalyptic number.

It is an amenable number.

8630434385 is a deficient number, since it is larger than the sum of its proper divisors (1726086883).

8630434385 is a wasteful number, since it uses less digits than its factorization.

8630434385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726086882.

The product of its (nonzero) digits is 829440, while the sum is 44.

The square root of 8630434385 is about 92900.1312431796. The cubic root of 8630434385 is about 2051.2135891732.

The spelling of 8630434385 in words is "eight billion, six hundred thirty million, four hundred thirty-four thousand, three hundred eighty-five".