2820515642 has 16 divisors (see below), whose sum is σ = 4842704832. Its totient is φ = 1206908640.

The previous prime is 2820515639. The next prime is 2820515647. The reversal of 2820515642 is 2465150282.

2820515642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2820515647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147659 + ... + 165662.

It is an arithmetic number, because the mean of its divisors is an integer number (302669052).

Almost surely, 2^2820515642 is an apocalyptic number.

2820515642 is a deficient number, since it is larger than the sum of its proper divisors (2022189190).

2820515642 is a wasteful number, since it uses less digits than its factorization.

2820515642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313973.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 2820515642 is about 53108.5270177963. The cubic root of 2820515642 is about 1412.8937505870.

The spelling of 2820515642 in words is "two billion, eight hundred twenty million, five hundred fifteen thousand, six hundred forty-two".