2283968821 has 4 divisors (see below), whose sum is σ = 2305314432. Its totient is φ = 2262623212.

The previous prime is 2283968773. The next prime is 2283968831. The reversal of 2283968821 is 1288693822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2283968821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2283968831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10672645 + ... + 10672858.

It is an arithmetic number, because the mean of its divisors is an integer number (576328608).

Almost surely, 2^2283968821 is an apocalyptic number.

It is an amenable number.

2283968821 is a deficient number, since it is larger than the sum of its proper divisors (21345611).

2283968821 is a wasteful number, since it uses less digits than its factorization.

2283968821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21345610.

The product of its digits is 663552, while the sum is 49.

The square root of 2283968821 is about 47790.8863801457. The cubic root of 2283968821 is about 1316.9321202182.

The spelling of 2283968821 in words is "two billion, two hundred eighty-three million, nine hundred sixty-eight thousand, eight hundred twenty-one".