4878321786 has 48 divisors (see below), whose sum is σ = 11388295464. Its totient is φ = 1500291072.

The previous prime is 4878321761. The next prime is 4878321803. The reversal of 4878321786 is 6871238784.

It is a happy number.

4878321786 is a `hidden beast` number, since 487 + 83 + 2 + 1 + 7 + 86 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3409976025 + 1468345761 = 58395^2 + 38319^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664890 + ... + 672186.

Almost surely, 2^4878321786 is an apocalyptic number.

4878321786 is an abundant number, since it is smaller than the sum of its proper divisors (6509973678).

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

4878321786 is a wasteful number, since it uses less digits than its factorization.

4878321786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175 (or 10172 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 4878321786 is about 69844.9839716497. The cubic root of 4878321786 is about 1695.9907581246.

The spelling of 4878321786 in words is "four billion, eight hundred seventy-eight million, three hundred twenty-one thousand, seven hundred eighty-six".