2821896451 has 4 divisors (see below), whose sum is σ = 3078432504. Its totient is φ = 2565360400.

The previous prime is 2821896431. The next prime is 2821896461. The reversal of 2821896451 is 1546981282.

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

It is a cyclic number.

It is not a de Polignac number, because 2821896451 - 2¹⁷ = 2821765379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2821896401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128268010 + ... + 128268031.

It is an arithmetic number, because the mean of its divisors is an integer number (769608126).

Almost surely, 2^2821896451 is an apocalyptic number.

2821896451 is a deficient number, since it is larger than the sum of its proper divisors (256536053).

2821896451 is a wasteful number, since it uses less digits than its factorization.

2821896451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256536052.

The product of its digits is 276480, while the sum is 46.

The square root of 2821896451 is about 53121.5253075436. The cubic root of 2821896451 is about 1413.1242779533.

The spelling of 2821896451 in words is "two billion, eight hundred twenty-one million, eight hundred ninety-six thousand, four hundred fifty-one".