1284672823 has 8 divisors (see below), whose sum is σ = 1468482048. Its totient is φ = 1100934744.

The previous prime is 1284672791. The next prime is 1284672877. The reversal of 1284672823 is 3282764821.

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

It is not a de Polignac number, because 1284672823 - 2⁵ = 1284672791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1284672823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284673823) 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, 29190 + ... + 58492.

It is an arithmetic number, because the mean of its divisors is an integer number (183560256).

Almost surely, 2^1284672823 is an apocalyptic number.

1284672823 is a deficient number, since it is larger than the sum of its proper divisors (183809225).

1284672823 is an equidigital number, since it uses as much as digits as its factorization.

1284672823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35573.

The product of its digits is 258048, while the sum is 43.

The square root of 1284672823 is about 35842.3328342339. The cubic root of 1284672823 is about 1087.0866913659.

The spelling of 1284672823 in words is "one billion, two hundred eighty-four million, six hundred seventy-two thousand, eight hundred twenty-three".