2820398534 has 4 divisors (see below), whose sum is σ = 4230597804. Its totient is φ = 1410199266.

The previous prime is 2820398491. The next prime is 2820398561. The reversal of 2820398534 is 4358930282.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705099632 + ... + 705099635.

It is an arithmetic number, because the mean of its divisors is an integer number (1057649451).

Almost surely, 2^2820398534 is an apocalyptic number.

2820398534 is a deficient number, since it is larger than the sum of its proper divisors (1410199270).

2820398534 is a wasteful number, since it uses less digits than its factorization.

2820398534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410199269.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 2820398534 is about 53107.4244715369. The cubic root of 2820398534 is about 1412.8741958351.

The spelling of 2820398534 in words is "two billion, eight hundred twenty million, three hundred ninety-eight thousand, five hundred thirty-four".