2821649294 has 4 divisors (see below), whose sum is σ = 4232473944. Its totient is φ = 1410824646.

The previous prime is 2821649287. The next prime is 2821649317. The reversal of 2821649294 is 4929461282.

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

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, 705412322 + ... + 705412325.

It is an arithmetic number, because the mean of its divisors is an integer number (1058118486).

Almost surely, 2^2821649294 is an apocalyptic number.

2821649294 is a deficient number, since it is larger than the sum of its proper divisors (1410824650).

2821649294 is a wasteful number, since it uses less digits than its factorization.

2821649294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410824649.

The product of its digits is 497664, while the sum is 47.

The square root of 2821649294 is about 53119.1989209175. The cubic root of 2821649294 is about 1413.0830203852.

The spelling of 2821649294 in words is "two billion, eight hundred twenty-one million, six hundred forty-nine thousand, two hundred ninety-four".