2819128642 has 16 divisors (see below), whose sum is σ = 4737799872. Its totient is φ = 1246788720.

The previous prime is 2819128621. The next prime is 2819128651. The reversal of 2819128642 is 2468219182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730838 + ... + 1732465.

It is an arithmetic number, because the mean of its divisors is an integer number (296112492).

Almost surely, 2^2819128642 is an apocalyptic number.

2819128642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2819128642 is a deficient number, since it is larger than the sum of its proper divisors (1918671230).

2819128642 is a wasteful number, since it uses less digits than its factorization.

2819128642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463353.

The product of its digits is 110592, while the sum is 43.

The square root of 2819128642 is about 53095.4672453308. The cubic root of 2819128642 is about 1412.6621138704.

The spelling of 2819128642 in words is "two billion, eight hundred nineteen million, one hundred twenty-eight thousand, six hundred forty-two".