1284874823 has 8 divisors (see below), whose sum is σ = 1289093136. Its totient is φ = 1280664000.

The previous prime is 1284874793. The next prime is 1284874847. The reversal of 1284874823 is 3284784821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284874823 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 (1284874853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712523 + ... + 714323.

It is an arithmetic number, because the mean of its divisors is an integer number (161136642).

Almost surely, 2^1284874823 is an apocalyptic number.

1284874823 is a deficient number, since it is larger than the sum of its proper divisors (4218313).

1284874823 is a wasteful number, since it uses less digits than its factorization.

1284874823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745.

The product of its digits is 688128, while the sum is 47.

The square root of 1284874823 is about 35845.1506204117. The cubic root of 1284874823 is about 1087.1436656656.

The spelling of 1284874823 in words is "one billion, two hundred eighty-four million, eight hundred seventy-four thousand, eight hundred twenty-three".