2840327838 has 12 divisors (see below), whose sum is σ = 6154043688. Its totient is φ = 946775940.

The previous prime is 2840327783. The next prime is 2840327939. The reversal of 2840327838 is 8387230482.

It is a junction number, because it is equal to n+sod(n) for n = 2840327793 and 2840327802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78897978 + ... + 78898013.

It is an arithmetic number, because the mean of its divisors is an integer number (512836974).

Almost surely, 2^2840327838 is an apocalyptic number.

2840327838 is an abundant number, since it is smaller than the sum of its proper divisors (3313715850).

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

2840327838 is a wasteful number, since it uses less digits than its factorization.

2840327838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157795999 (or 157795996 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 2840327838 is about 53294.7261743599. The cubic root of 2840327838 is about 1416.1942392499.

The spelling of 2840327838 in words is "two billion, eight hundred forty million, three hundred twenty-seven thousand, eight hundred thirty-eight".