3784907820 has 48 divisors (see below), whose sum is σ = 10777374720. Its totient is φ = 992200896.

The previous prime is 3784907803. The next prime is 3784907821. The reversal of 3784907820 is 287094873.

It is a self number, because there is not a number n which added to its sum of digits gives 3784907820.

It is not an unprimeable number, because it can be changed into a prime (3784907821) 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, 531052 + ... + 538131.

It is an arithmetic number, because the mean of its divisors is an integer number (224528640).

Almost surely, 2^3784907820 is an apocalyptic number.

3784907820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3784907820 is an abundant number, since it is smaller than the sum of its proper divisors (6992466900).

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

3784907820 is a wasteful number, since it uses less digits than its factorization.

3784907820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069254 (or 1069252 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 3784907820 is about 61521.6044979323. The cubic root of 3784907820 is about 1558.4221142921.

The spelling of 3784907820 in words is "three billion, seven hundred eighty-four million, nine hundred seven thousand, eight hundred twenty".