4020493780 has 12 divisors (see below), whose sum is σ = 8443036980. Its totient is φ = 1608197504.

The previous prime is 4020493751. The next prime is 4020493811. The reversal of 4020493780 is 873940204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1965503556 + 2054990224 = 44334^2 + 45332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100512325 + ... + 100512364.

It is an arithmetic number, because the mean of its divisors is an integer number (703586415).

Almost surely, 2^4020493780 is an apocalyptic number.

It is an amenable number.

4020493780 is an abundant number, since it is smaller than the sum of its proper divisors (4422543200).

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

4020493780 is a wasteful number, since it uses less digits than its factorization.

4020493780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201024698 (or 201024696 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 4020493780 is about 63407.3637679410. The cubic root of 4020493780 is about 1590.1074225644.

The spelling of 4020493780 in words is "four billion, twenty million, four hundred ninety-three thousand, seven hundred eighty".